CULTURAL QA 03202417
Q2 Who invented the Raman effect?
KR Thank GOD Sujatha did not remember C V Raman bit Einstein only; I
wrote few years back about Raman but not the theory. Now why not on the
tech jargon?
A K S Krishnan: Krishnan was elected as Fellow of the Royal Society
(FRS) in 1940. His Royal Society candidature certificate in 1935 read:
"Distinguished for his investigations in molecular optics and in
magnet-crystalline action: collaborated with Sir C.V. Raman in extensive
theoretical and experimental studies on light scattering, molecular optics
and in the discovery of the Raman Effect (1928). More recently has been
publishing many valuable investigations (Phil Trans Royal Society and
elsewhere) on the significance of magnetic anisotropy in relation to
crystal architecture and thermo-magnetic behaviour at the lowest
temperatures. Has published important work on pleochroism in crystals and
its relation to photo-dissociation. Leader of an active school of research
in Calcutta."
2 What is remarkable about Krishnan is not that he is a great scientist
but something much more. He is a perfect citizen, a whole man with an
integrated personality. – Jawaharlal Nehru
3 KS Krishnan died only in 2014 in London.
4 Theory: Raman effect:
Raman effect takes place when light enters in a molecule and interacts with
the electron density of the chemical bond causing electromagnetic field in
the molecule leading to vibrational and deformation of frequency shift. The
incident photon excites the electron into a virtual state. The spontaneous
Raman effect takes place when the molecules are excited from the ground
state to a virtual state and relax into a vibrational excited state forming
Stokes Raman scattering. If the molecules are already in the excited
vibration state, the phenomenon is known as anti-Stokes Raman scattering.
In nanotechnology, a Raman spectroscopy is used to better understand the
composition of the structures, crystallographic orientation of the sample
and the change in vibrational frequency for chemical bond. In general,
infrared spectroscopy and Raman spectroscopy are complementary techniques
but the selection rule is different
Now imagine you are throwing a bucket of water; almost 80 % of water
goes in the right direction as a bulk towards the subject, in one lump; but
the 20% at the end, splits in different directions, dropping in many places
including on your foot. The force of energy decreases at the end. So drops
dead on your feet. This is scattering. Now suppose the water left the
bucket at the end over a plant at garden, where you threw the water in the
bucket, then energy though decreased as the length was reduced, as
maintained a purpose of equilibrium WAS NAMED AS REILEIGH SPECTRUM -EQUAL
SYNTHESIS. And the next bucket might be at the end, say go over the garden
plant and the border of the plant so was causing non-equilibrium of a
triangle-direction hence named as, STOKES SPECTRUM. In another bucket it
was at the e, while scattering the water, drops on the fence and your feet
then that spectrum is ANTI-STOKES SPECTRUM.
Behaviours of the molecules became vital, since energy is
depleted on the whole as all lights from the so many mediums reflected, did
not yield `100% energy and caused a loss, differently at different energy
transmissions. This scattering caused weakening movements of the energy in
plants reducing the dwindling in the yield and so effective harvesting of
the crops due poor emissions, were found later a way, to course correct the
agricultural operations. So, bulb manufacturing; cricket stadium light
fixing; and so, on so forth even like adjustment of focus of car head
lights.
Although the Raman effect involves a change in the wavelength of
light, it is an instantaneous process and actually a form of scattering
rather than traditional absorption. Therefore, it can occur at a wide range
of wavelengths. It is based on changes induced in the rotational and
vibrational states of the molecular bonds induced by infrared light. Most
scattering between light and molecules is elastic; the energy of the photon
striking the molecule is the same as the emitted light. About one in every
million collisions is inelastic and involves a quantitative exchange of
energy between the scattered and incident photon. With the Raman effect,
monochromatic light is scattered by a molecule. A frequency shift then
occurs above and below the incident light in a small fraction of the light
scattered, which is known as the anti-Stokes and Stokes shift.22 This shift
is independent of the frequency of the incident light but the intensity
varies with the fourth power of the frequency of the incident radiation.
The Raman effect occurs when a beam of intense radiation passes through a
sample that contains a molecule that can undergo a change in molecular
polarizability as it vibrates. Raman is somewhat distinct from infrared
absorption since changes in the polarizability are of more importance than
that of the dipole moment. Polarizability is distinct from the classic
dipole radiation. The electron cloud around the molecule elongates and
contracts under the electromagnetic radiation in a manner distinct from the
resting state or normal modes.
Symmetrical molecules have greater Raman effects than
asymmetrical molecules, an effect which is opposite from traditional
absorption and second harmonic generation (discussed in Chapter 9). The
intensity of fluorescence produced may therefore be orders of magnitude
higher than the Raman effect, completely obscuring the Raman spectrum. This
is why Raman spectroscopy is performed in the near infrared. This frequency
has been chosen to lie below most electron transitions and above the
fundamental vibrational frequencies. The biggest disadvantage of Raman
spectroscopy, in addition to its low sensitivity, is that the number of
high-energy photons required may result in tissue damage and concurrently
reduced penetration. It should also be noted that a relatively long time is
required to obtain data, making its clinical viability questionable. It
takes roughly 5 seconds to take a single Raman spectrum measurement with
reasonably low signal to noise ratio. Therefore, Raman spectroscopy
currently is an experimental technique which has yet to demonstrate
clinical utility.
K RAJARAM IRS 17324
Q3 Why do Hindus not cremate the dead after sunset?
KR G In Hindu religion there are total 16 rituals which include
death rituals too.
KR No; 40 samskaras 16 is lower number allowed to be at least
performed.
G according to scriptures a dead body does not cremate after sunset. It
is because the presence of sun (surya) is important during last rituals of
death. And ……………..”
KR All erroneous and not pertinently explained.
>From the time of the Rig Veda, which contains passages possibly written as
far aback as 2000 B.C., Hindus have cremated the dead although small
children and ascetic were sometimes buried and low caste members sometimes
buried their own. One passage from the Rig Veda addressed to Jataedas!, the
fire that burns that corpse, goes.
O Jataedas! When you thoroughly burn this [departed person],
Then may you hand him over to the pitris [i.e. heavenly fathers]!
When he [the deceased] follows thus [path] that leads to a new life,
May he become on that carries out the wishes of the gods
Sometimes animals were sacrificed at the funerals. Another passage from the
Rig Veda reads:
O Jatavedas! May you burn by your heat the goat that is youre share!
May your flame, may your bright light burn that goat;
Carry this [departed soul] to the world if this who do good deeds
By means of youre beneficent bodies [flames]!
Adverse remarks on burning and the state said 3.14 million bodies in India
are burnt.
Wallace wrote in the Los Angeles Times, Mokshda's alternative is the "Green
Cremation System," a cremation bier it developed 15 years ago and has been
tinkering with since. The organization believes it has perfected its
design, saying it can burn a body using a mere 220 pounds of wood in a
third of the time. [Source: Bruce Wallace, Los Angeles Times, September 3,
2007 ^^]
“Wood is integral to Hindu cremation rites, a symbolic connection between
the body and the earth, which is why the first layer of wood is laid on the
ground. The Mokshda system's innovation is to place that first layer of
wood on a raised metal grate, allowing for better air circulation. A
chimney is placed over the pyre to cut heat loss. "We have improved the
flow of air and where there is a proper flow of air, your combustion
efficiency increases," Garg said. "This is not a new technological gizmo.
It's a simplicity, like improving the efficiency of a wood stove." ^^
“Mokshda's system has made only tiny inroads so far. It has 12 units of its
latest model, which on average costs about $30,000, in operation, with
orders for 80 more in the pipeline. But the potential demand is enormous.
Mokshda says it has identified 800 crematoriums across India as possible
users. The Delhi metropolitan area alone has about 350 crematoriums, their
flaky residue occasionally drifting over nearby neighborhoods. ^^
“Mokshda says its system can succeed where the electric one failed because
it allows Hindus to perform traditional rituals. The challenge is to
convince devout Hindus that using less wood does not break with orthodoxy.
Even Garg acknowledges that it will be a while before Mokshda's cremation
bier is welcome in a place such as Varanasi.” ^^
“And in his office on Varanasi's back streets, Kameshwar Upadhyay, a Hindu
scholar known for his strict views, looked thoughtfully at photographs of
the Mokshda system and didn't dismiss it as heretical. He acknowledged that
India is groaning under the stress of an expanding population. And if he
was not about to welcome the Mokshda system in the spiritual center of
Varanasi, he thought it might not be a bad idea in big cities. ^^
"There is a provision that after death, a person needs to be completely
de-linked from this Earth, and fire helps in that goal," Upadhyay said.
"But there are changing situations that come to us on Earth and we have to
work out compromises for that. As long as mukhagni and kapal kriya can be
followed, there should be no problem. "Fire," he said, "is fire."” ^^
Resistance to Green Cremation
Wallace wrote: But the Mokshda system faces two big obstacles to
acceptance. For one thing, improving cremation methods is a low priority
for cash-strapped municipalities facing a host of public health issues. An
even greater obstacle is the resistance of traditionalists who don't want
to mess with a matter as sensitive as the fate of a loved one's soul. "We
have changed other rituals — marriage, eating habits, clothing — but
rituals around death are the hardest to change," Garg said. "People are
hesitant to talk about death; there is a fear. So they say they'll stick
with what they've been following through the ages." [Source: Bruce Wallace,
Los Angeles Times, September 3, 2007 ^^]
मा । एनम् । अग्ने । वि । दहः । मा । अभि । शोचः । मा । अस्य । त्वचम् ।
चिक्षिपः । मा । शरीरम् । यदा । शृतम् । कृणवः । जातवेदः । अथ । ईम् । एनम् ।
प्र । हिणुतात् । पितृभ्यः ॥RV 10 16 1
mā | enam | agne | vi | dahaḥ | mā | abhi | śocaḥ | mā | asya | tvacam |
cikṣipaḥ | mā | śarīram | yadā | śṛtam | kṛṇavaḥ | jāta-vedaḥ | atha | īm |
enam | pra | hiṇutāt | pitṛ-bhyaḥ
“Agni, consume him not entirely; afflict him not; scatter not (here and
there) his skin nor his body; whenJātavedas, you have rendered him mature,
then send him to the Pitṛs.”
Commentary by Sāyaṇa: Ṛgveda-bhāṣya
The first six ṛcas are to be recited at (or upon) the death of an initiated
person n-- dīkṣitamaraṇe; not his skin nor his body: may be an allusion to
the spiritual, or suṣma śarīra; do not reduce him to ashes, bhamībhūtam mā
kuru]..
“When you have rendered him mature, then give him up, Jatavedas, to the
Pitṛs; when he proceeds to that world of spirits, then he becomes subject
to the will of the gods’ RV 10 16 2
Commentary by Sāyaṇa: Ṛgveda-bhāṣya
When he proceeds to that world of spirits: when he obtains the quickening
of life, prāṇa preraṇam, wrought by Agni
शृतम् । यदा । करसि । जातवेदः । अथ । ईम् । एनम् । परि । दत्तात् । पितृभ्यः ।
यदा । गच्छाति । असुनीतिम् । एताम् । अथ । देवानाम् । वशनीः । भवाति ॥
śṛtam | yadā | karasi | jāta-vedaḥ | atha | īm | enam | pari | dattāt |
pitṛ-bhyaḥ | yadā | gacchāti | asu-nītim | etām | atha | devānām | vaśa-nīḥ
| bhavāti
“Let the eye repair to the sun; the breath to the wind; go you to the
heaven or to the earth, according to your merit; or go to the waters it
suits you (to be) there, or abide with your members in the plural nets. ”RV
10 16 3
सूर्यम् । चक्षुः । गच्छतु । वातम् । आत्मा । द्याम् । च । गच्छ । पृथिवीम् ।
च । धर्मणा । अपः । वा । गच्छ । यदि । तत्र । ते । हितम् । ओषधीषु । प्रति ।
तिष्ठ । शरीरैः ॥
sūryam | cakṣuḥ | gacchatu | vātam | ātmā | dyām | ca | gaccha | pṛthivīm |
ca | dharmaṇā | apaḥ | vā | gaccha | yadi | tatra | te | hitam | oṣadhīṣu |
prati | tiṣṭha | śarīraiḥ
“The unborn portion;( Sanskrit term AJA ; b g Na ajayathe} burn that,
Agni, with your heat; let your flame, your splendour, consume it; with
those glorious members which you have given him, Jātavedas, bear him to the
world (of the virtuous).”
R V 10 16 4
Commentary by Sāyaṇa: Ṛgveda-bhāṣya
Theunborn portion: ajo bhāgaḥ = the goat is your portion; {KR Problem was
sayana or anyone else?; AJA MEANS GOAT ; UNBORN; VISHNU; SO ON SO FORTH;
BUT WEST IN A LATER VERSE SAID EVEN GOATS WERE ASSIGNED TO FIRE; BUT THE
TRUTH IS THE VERSES DEMANDS THAT THE UNBORN PORTION BE FIRST CONSUMED;
MEANS Atma; INUSED PARTS LIKE BRAIN; AND DEFINETELY NOT goat ;antarapuruṣa,
which has no body, no organs of sense; heat, flame and splendour: tapas,
śocis and arcis: the positive, comparative and superlative radiance of Agni}
अजः । भागः । तपसा । तम् । तपस्व । तम् । ते । शोचिः । तपतु । तम् । ते ।
अर्चिः । याः । ते । शिवाः । तन्वः । जातवेदः । ताभिः । वह । एनम् । सुकृताम्
। ऊँ इति । लोकम् ॥
ajaḥ | bhāgaḥ | tapasā | tam | tapasva | tam | te | śociḥ | tapatu | tam |
te | arciḥ | yāḥ | te | śivāḥ | tanvaḥ | jāta-vedaḥ | tābhiḥ | vaha | enam
| su-kṛtām | oṃ iti | lokam
“Dismiss again to the Pitṛs, Agni, him who offered on you, comes with the
svadhās; putting on(celestial) life, let the remains (of bodily life)
depart; let him, Jatavedas, be associated with a body.” RV 10 16 5
अव । सृज । पुनः । अग्ने । पितृभ्यः । यः । ते । आहुतः । चरति । स्वधाभिः ।
आयुः । वसानः । उप । वेतु । शेषः । सम् । गच्छताम् । तन्वा । जातवेदः ॥
ava | sṛja | punaḥ | agne | pitṛ-bhyaḥ | yaḥ | te | āhutaḥ | carati |
svadhābhiḥ | āyuḥ | vasānaḥ | upa | vetu | śeṣaḥ | sam | gacchatām | tanvā
| jāta-vedaḥ
“Should the black crow, the ant, the snake, the wild beast, harm (a limb)
of you, may Agni theall-devourer, and the Soma that has pervaded the
brāhmaṇas, make it whole.” R V 10 16 7
Commentary by Sāyaṇa: Ṛgveda-bhāṣya
The wild beast: jackal orhyaena
यत् । ते । कृष्णः । शकुनः । आतुतोद । पिपीलः । सर्पः । उत । वा । श्वापदः ।
अग्निः । तत् । विश्वअत् । अगदम् । कृणोतु । सोमः । च । यः । ब्राह्मणान् ।
आविवेश ॥
yat | te | kṛṣṇaḥ | śakunaḥ | ātutoda | pipīlaḥ | sarpaḥ | uta | vā |
śvāpadaḥ | agniḥ | tat | viśva-at | agadam | kṛṇotu | somaḥ | ca | yaḥ |
brāhmaṇān | āviveśa
The final rites have evolved in many ways, but cremation as the
method for the disposal of the dead remains a constant. In times past,
funeral gifts consisted of
(1) empty cotton balls, which were exchanged as money,
(2) iron pots, since the metal is considered full of subtle impure
influences, easily accepted by the envoys of Yama (yamaduta), (3) salt,
which in its complex significance is not only the residue of primeval
oceans but also a symbol of sterility and death. Salt conserves food and
adds flavour. Salt is a substitute for the dying man who is becoming
mineralized, and who will remain in a state of preservation until the
moment in which he will return to a new existence.
(4) Land may be gifted, too, or a poor man hand the brahmin priest a
handful of earth, along with a few coins, signifying that the old man is
registered to leaving the earth.
(5) A handful of cereal and legume seeds are also a part of the gift; these
seeds represent the old man’s last vital powers which he disperses to take
his last trip.
(6) Laddu, a spherical, golden colour sweet, which the god Ganesha loves.
The elephant-headed god is the destroyer of obstacles and the lord of
passages, so through this gift, the man guarantees his exit from earthly
life without hindrances or difficulties.
(7) If possible, a fragment of gold is applied on the laddu as payment for
the passage to the world beyond. “The gift of gold produces happiness in
heaven” (Garuda Purana, II.30.16).
(8) The final gift is that of a cow, call Vaitarani, meaning one who helps
in crossing over. Bedecked with painted gold horns, silver hooves, and
copper back, neck adorned with bells and her tail braided with pearls, the
cow is brought into the room of the old man and his right-hand holds her
tail. He then consigns the cow to the brahmin. The animal functions as a
psychopomp, leading the deceased along the road that leads to the kingdom
of the dead.
A poor man who cannot afford the gift of a cow can donate a few coins,
symbolizing the price of a cow. It is interesting to note that in archaic
Hinduism, still alive in Bali, the remains of brahmins are enclosed in
wooden coffins sculptures in the form of a cow. In this coffin, they are
delivered to the flames of cremation.
Garuda Purana, II.47.22-23 advises the funeral gifts to be offered during
an eclipse, an equinox, at dusk, or at the sun’s passage from one zodiacal
sign to the next (Wood 52). Many elderly who are not on the brink of death
would try to coincide their gift giving with some important astrological
event.
As per Garuda Purana II.2.12 and 14, a mandala, a magic circle of
protection, is drawn all around the corpse. It is believed that if the
deceased is not protected this way, he will be reborn in the air, and thus
will become a pisaca (Filippi 127-28). So great was the emphasis on the
final stage of life in earlier Hindu societies. The belief in spirits
continues to this day in all the three Hindu communities. Water is
sprinkled in a circle around the funeral pyre in Mauritian Hindu cremations
to demarcate the sacred cremation space from the undifferentiated landscape
of everyday life.
Fire – The Medium of Sacrifice
In the Katha Upanishad, the symbolic sacredness and sanctity of fire is
explained by Lord Yama, none other than the God of Death himself. Yama is
conversing with a young Brahmin boy, Nachiketas.
Agni Sanskar (cremation) leads the dead from this world to the next. “With
few exceptions, the Hindu rites at the time of death and the procedures for
cremation (antyesti) are fairly uniform throughout the regions of India.
This conformity in ritual across vedic, epic, puranic, and agamic periods,
and on into modern practice, is remarkable” (Davis 2).
Yama, the God of Death
Yama, the god of death, is said to take the person who is about to die. The
myths of Yama, common in Bali, Mauritius, and Dallas, are generally passed
down as oral tradition, and for the older generation, reading about him in
Indian mythology books. The Balinese figure of Rangda, although a female,
embodies the notions of fright and is fused with Yama.
In the Vedic tradition, Yama is the first mortal to meet his fate with
Death. This honor makes him uniquely qualified to lead the way for others
after death. The tenth book of the Rig Veda has three hymns, 10, 14, and
35, addressed to Yama as Yamraj (King Yama), an acknowledgment of Yama as
the king of the Underworld.
Rituals at Death
So, if RV 10 15 1 and 7 were to consider; and the path of the south as
darkness and that of North as bright day light were also taken into
account, burning in the night is avoided.
K Rajaram IRS 17 3 24
Q5 Can you tell an instance of Humanity?
KR So against the statue book bankers have no elements of humanity?
Q6 What are the most fascinating science facts?
G Lungs do more than help us breathe – a surprising discovery has found
they also make blood. (article from nature)
KR I appreciate the PHD student; but Lungs do not do that; it is as
if telling worn out parts are made by the factory anew; yes, it is in the
factory; yes it is in the lungs; but article in nature would reveal, that
lungs is a place of oxygen incoming and CO2 dying out; so the platelets
dead woods stored in the process of blood circulation, as oxygen lets in,
revives and mix with the next blood stream. Lungs is the factory.
G A new state of matter exists (alongside solid, liquid, gaseous,
bose-einstein condensate & plasma ) and it is known as time crystals
(article from nature)
KR Yes but another form of matter with only temporary stay. Physicists
in Finland are the latest scientists to create “time crystals,” a newly
discovered phase of matter that exists only at tiny atomic scales and
extremely low temperatures but also seems to challenge a fundamental law of
nature: the prohibition against perpetual motion.
The effect is only seen under quantum mechanical conditions (which is how
atoms and their particles interact) and any attempt to extract work from
such a system will destroy it. But the research reveals more of the
counterintuitive nature of the quantum realm — the very smallest scale of
the universe that ultimately influences everything else.
Time crystals have no practical use, and they don’t look anything like
natural crystals. In fact, they don’t look like much at all. Instead, the
name “time crystal” — one any marketing executive would be proud of —
describes their regular changes in quantum states over a period of time,
rather than their regular shapes in physical space, like ice, quartz or
diamond. Some scientists suggest time crystals might one day make memory
for quantum computers. But the more immediate goal of such work is to learn
more about quantum mechanics, said physicist Samuli Autti, a lecturer and
research fellow at Lancaster University in the United Kingdom.
And just as the modern world relies on quantum mechanical effects inside
transistors, there’s a possibility that these new quantum artifacts could
one day prove useful.
“Maybe time crystals will eventually power some quantum features in your
smartphone,” Autti said.
K R IRS 17324
---------- Forwarded message ---------
From: 'gopala krishnan' via iyer123 <[email protected]>
Date: Sun, 17 Mar 2024 at 00:19
Subject: [iyer123] CULTURAL QA 03-2024-17
To: Patty Thatha <[email protected]>, Kerala Iyer <
[email protected]>, Iyer <[email protected]>
CULTURAL QA 03-2024-17
All the below QA are from QUORA DIGEST to me on 1-03-2024.
Selected Quora answers by scholars generally interesting are included. Still
they need not be 100% correct answers. Good jokes are also included.
I am only a compiler. Compiled and posted by R Gopalakrishnan, 80, on
17-3-2024
Q1 What are some of the greatest examples of presence of mind?
A1 Sushilp Narwade, Instrumentation Engineer Updated 6y
One of my friends (say X) had an interview at a Pizza center. He took me
with him. Manager told him to wait for 20 minutes and went out of cabin for
some work.
We both were waiting outside on a desk. I noticed that there was discount
on a pizza offer and I was a bit hungry so I could not control myself from
buying a pizza, so I bought a pizza and came to the same desk.
We both started eating, as soon as X was about to take a slice to eat,
Manager came and was glaring at us . X saw him but I was busy eating.
(Manager= M)
M :- What are you here for? (sarcastically)
X :- For an interview, sir.
M :- So, what are you doing ?
X :- Tasting this pizza.( I was still busy eating pizza.)
M :- Who is he beside you?
X :- He is our customer, sir.( I was like what did you just say!)
M : - Come at 6pm from tomorrow, you can work by evening shift.
Q2 Who invented the Raman effect?
A2 Abhishek Verma,Jan 19
The Raman effect was discovered in 1928 by the Indian physicist C. V.
Raman, who was awarded the Nobel Prize in Physics in 1930 for his discovery.
The Raman effect, also known as Raman scattering, is a phenomenon of light
scattering that occurs when a photon interacts with a molecule and changes
its energy and wavelength. He was assisted by his student K. S. Krishnan,
who also made significant contributions to the field of light scattering.
The Raman effect can be used to study the molecular structure, composition,
and properties of materials by measuring the frequency shifts of the
scattered light.
The Raman effect has various applications in spectroscopy, chemistry,
biology, and materials science.
My note- one can easily say why the sky is blue. This depends on the
scattering of blue light because of the presence of the air molecules in
the atmosphere.
Association of KS Krishnan, with CV Raman is a new information
Q3 Why do Hindus not cremate the dead after sunset?
A3 Kumkum Agrahari, The jouney of souls Mar 3
In Hindu religion there are total 16 rituals which include death rituals
too.
According to scriptures a dead body does not cremate after sunset. It is
because the presence of sun (surya) is important during last rituals of
death.
As it had told in scriptures that human body is made up of five elements.
Earth,Fire,Water,Air and sky. After performing the last rites of a person
these five elements will merge into one.
So if a person dies after sunset the body keeps near Tulsi plant. And after
sunrise the death rituals get perform near ghats.
According to Garun Puran, if we perform cremation after sunset the soul of
dead person will wander here and there and will never achieve peace. It
will not able to start it’s next life.
It is also considered that after sunset the door of heaven close and the
door of hell opens. So the person might have to enter in hell.
So it is important to perform the last rites of dead person in daytime
Q4 Why do ostriches bury their heads?
A4 Lee Nyaga,Online and Networking and a Digital Specialist
(2021–present)8mo
This idea is so prominent throughout history, that these large birds have
become synonymous with people who refuse to face their problems head-on.
However, in this day and age, the rumor that ostriches stick their heads in
the sand has been proven to be a myth.
Do ostriches really bury their head in the sand?
Contrary to the popular myth, ostriches do not bury their head in the sand
when scared or frightened. In fact, when an ostrich senses danger and
cannot run away, it will flop to the ground and remain still, attempting to
blend in with the terrain.
However, from time to time you might find an ostrich looking as if it has
its head in the sand, but not because it’s scared. Ostriches dig shallow
holes in the sand to serve as nests for their eggs. The ostrich will use
its beak several times a day to turn the eggs in the nest, creating the
illusion of burying its head in the sand. An ostrich trying to hide from
predators in this way wouldn’t last for long, and it wouldn’t be able to
breathe, either!
Q5 Can you tell an instance of Humanity?
A5 Pusp L.,Sep 16
“A bank in Los Angeles called the police because they had a problem with an
elderly resident.
When the officer arrived, he found a 92-year-old man upset because the bank
wouldn't give him money.
His identity card had expired, and the bank could not pay him without valid
documents. The old man, however, did not understand what the problem was.
Instead of escorting him out of the bank, the policeman took the old man by
the arm and drove him to the police station, where he was immediately
issued a new ID.
The policeman then drove him back to the bank, where he was handed the
money a few minutes before the counter closed.”(shared)
Q6 What are the most fascinating science facts?
A6 Anuja Tripathi,Ph.D student, in Chemical and Materials Engineering,
University of Alberta Updated 5y
Lungs do more than help us breathe – a surprising discovery has found they
also make blood. (article from nature)
A new state of matter exists (alongside solid, liquid, gaseous,
bose-einstein condensate & plasma ) and it is known as time crystals
(article from nature)
Oxygen has a color: As a gas, oxygen is odorless and colorless. In its
liquid and solid forms, however, it looks pale blue. (Does O2 have a color
in the gas phase)
Water can be boiled and frozen at once, known as Triple Point. (The Triple
Point Is When a Liquid Can Boil and Freeze at Once )
If you add 250 ml of alcohol and 250 ml of water, the resultant mix will be
480 ml due to the bonding between water and ethanol molecules.
6. If you spin a ball when you drop it, it will fly through the air as it
falls. This is called the Magnus effect. (How Footballs, Ping-Pong, Tennis
and Basketballs Swerve In Mid-Air?)
7. Potassium, sodium, lithium, rubidium and caesium are some metals which
are so reactive that they oxidise instantly when exposed to air. They can
even produce explosions when dropped in water!
8. Polar bears are nearly undetectable by infrared cameras: Thermal cameras
detect the heat lost by a subject as infrared, but polar bears are experts
at conserving heat.
9. Stomach acid with a pH of 2 to 3 is strong nough to dissolve metals.
(Gastric acid - Wikipedia)
10. Venus and Uranus are the only planets in our solar system to spin
clockwise.
11. Two metal objects can stick together in space, permanently. There is no
fusion involved, it’s called cold welding. (Cold welding - Wikipedia)
12. Playing a *moderate* amount of video games is actually good for you. It
boosts your memory and multitasking skills, can help those with dyslexia,
increases coordination and reduces stress.
13. Caffeine is the most widely used recreational drug. It's also one of
the most addictive. It's a stimulant, like cocaine.
14. Hot and cold water sound different when being poured: Water changes
viscosity (aka its thickness or stickiness) depending on temperature. The
colder the water, the higher the pitch, whereas pouring something hot like
say..coffee...is going to have a lower, more comforting pitch. ( Naked
Scientists Online, Science Podcast and Science Radio Show)
15. There is a species of beetle (Bombardier Beetle) - that shoots a
boiling hot chemical mixture at its enemies by mixing hydroquinone and
hydrogen peroxide together.. It literally farts fire at you.
Q7 What are some wise things about life?
A7 Flavian Mwasi, Entrepreneur | Life Coach | Mentor at Life and
Living2y
Life is like a blank cheque already signed with your name written on it.
The only thing you have to do is fill in the number you want. Problem is
that most people write a negative number and then blame others for their
miseries. Only 1% of people have some idea what number to write on the
blank.
Even if you wore the same clothes every day for a week days nobody will
notice that you wore the same clothes yesterday. People are so engrossed in
their own personal thoughts and problems that they have no time to waste
checking what kind of clothes you’re wearing each day.
My note- I don’t agree. Dirty shirt will be noted
The greatest life hack is the elusive feeling of happiness. If you can
teach your brain to laugh even when you don’t feel like, your brain can’t
tell the difference whether you’re happy or sad. You can then enjoy
perpetual happiness any time you want it 24/7.
Of all the skills in the world, the greatest skill is the ability to say
“NO”.
All the wealth in the world is yours for the taking provided that you give
people what they want. Then and only then will they feel compelled to give
you what you want.
The problem with most people is that they will always copy what others are
doing. People will always doubt their abilities even if you tell them
they’re good at something. They lack the self-confidence to do something
that has never been done, only to realize quite late that they had a better
idea than everybody else.
The greatest problem in life is not the lack of money. The problem is that
most people want the money for all the wrong reasons, and don’t know what
to do with it once they get it. This is what repulses money away from most
people.
Lack of contentment is the root of all evil and miseries. From it emanates
all kinds of jealousies, hate, greed and murders. On the other hand,
contentment is the root of all happiness.
Love everyone for who they are for that’s a universal law. However, don’t
choose the person you’re going to spend the rest of your life with blindly,
or simply because you’ve fallen in love with them “head-over-heels”.
Sometimes it’s possible that other people have also fallen in love with
them “head-over-heels” before you.
Never argue just for the sake of argument, unless you’re sure your opinion
could save lives. Otherwise agree with your opponent and move on to save
time and money. They’ll think that they’ve won the battle only to realize
later that they were fools.
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