What is GRAVITY?
In the year 2013 a Science fiction movie GRAVITY was awarded with OSCAR My daughter persuaded us to see this movie on big screen in Cinema Hall to get the 3D effect. It was amazing to see a Medical Engineer Astronaut Dr. Ryan Stone (Actress Sandra Bullock) and a veteran Astronaut Matt Kowalsky (Actor George Clooney) on a space shuttle to repair the damaged Hubble Telescope. During their space walk , disaster strikes their shuttle and other crew members gets destroyed leaving the two astronauts stranded in Space. No link with the Earth, the terrifying expanse of space how they make to International Space Stations and another Chinese Space station close by…
and board a Soyuz model and return home (Earth).A unique grand movie
Everything floats in Space as there is no Gravity there.
Due to this gravity we have a firm foothold on Earth. What will be Life without this force?
I kept pondering…
Had learnt about Newton’s Laws of Gravitation in School…
Sir Isaac Newton (25 December1642-20 March 1726) was an English Physicist and Mathematician one of the most influential scientist of all times.
What is Gravity?
Gravity is an invisible force that pulls/attracts all matter towards itself. But this force is very very weak that is why the matter does not get pulled with other objects. The fundamental forces of the universe include the electromagnetic, strong nuclear, weak nuclear and gravitational forces. Gravity is the weakest of all but in cases where matter is involved in massive quantities (for example: a black hole), it is the strongest and most dominant one. Gravity is the reason everything gets attracted towards the Earth’s surface, and also for the formation and movement of all the planets and other heavenly bodies.
(Gravity keeps the moon where it’s supposed to be — in orbit.
Photo courtesy of NASA)
Gravity also is important on a larger scale. It is the Sun’s gravity that keeps the Earth in orbit around the Sun; otherwise Earth would fling drifting in space. Life on Earth needs the Sun’s light and warmth to survive. Gravity helps the Earth to stay just the right distance from the Sun, so it’s not too hot or too cold. It’s the Earth’s gravity that keeps the moon in orbit around the Earth.
.
Isaac Newton discovered Gravitational Force
Newton’s law of universal gravitation, which postulates that the gravitational force of two bodies of mass is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. He also postulated the Law of Motion.
Gravitational Force = G* ___(M1*M2) ______________
(d2)
where ‘G’ is the gravitational constant, ‘m1’ and ‘m2’ are the masses of the two objects, for which the force has to be calculated, and ‘d’ is the distance between the centers of gravity of both masses.
In modern physics, gravity is most accurately described by the general theory of relativity (proposed by Einstein) which describes gravity as a consequence of the curvature of spacetime. (Albert Einstein called gravity a distortion in the shape of space-time. Photo by keystone/getty images)
In 1806, a British physiologist called A. Knight demonstrated through an experiment, the control of gravity on the direction of a plant’s root growth. The term geotropism was first coined by A. B. Franck in 1868. It is a growth movement by a plant in response to gravity.
If you were to put a plant on its side you would notice that after a while the roots start growing downward while the stem grows upward. This response to gravity is called geotropism, or gravitropism. The roots are exhibiting positive geotropism (growing with gravity) and the stem is exhibiting negative geotropism (growing against gravity).
Fun facts about gravity:
Ocean tides are caused by the gravity of the moon.
Mars is smaller and has less mass than Earth. As a result it has less gravity. If you weigh 100 pounds on Earth, you would weigh 38 pounds on Mars. Moon
SOURCE:Buzzle, howstuffworks images from NASA ,Net.
Jyoti Kalia
Jyoti Kalia
May 04, 2015 at 09:56 am
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Thanks mam for sharing this blog having lot of information for me 🙂
JAI SHREE KRISHNAA
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Prajakta Dighe
Prajakta Dighe Replies to Jyoti Kalia
May 04, 2015 at 01:50 pm
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Jai Shri Krishna.
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Manas Das
Manas Das
May 03, 2015 at 04:58 pm
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Beautifully presented.
Science has such a deep connection with spirituality…
therefore some describes it as Metaphysics…….
As the earth attract matter….
the supreme soul attracts the soul….
in meditation one can experience this pu.. this attraction…
when the mind is still.. and focused one is drawn inner and inner…
this journey to deep within is also some sort of Gravitational pull…
i do not know… how a scientist shall describe this…
but more or less it is the same force which plays…
Nice post.
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Prajakta Dighe
Prajakta Dighe Replies to Manas Das
May 03, 2015 at 06:06 pm
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Thanks for your views.
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Arup Ratan Biswas
Arup Ratan Biswas
May 03, 2015 at 01:30 pm
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Though the facts are known to us as students of science yet the picturesque presentation and it’s content is very good & appreciable…I always try myself & look forward to have & see blogs on this forum , a blend of science & spirituality…the positive & practical search of the ‘Truth’. Thanks.
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Prajakta Dighe
Prajakta Dighe Replies to Arup Ratan Biswas
May 03, 2015 at 02:14 pm
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Thanks a lot. Actually something triggered in me when i read COSMOS by Carl Sagan . Like to share with u all so the blog. Our existence , this wonderful creation of the Almighty makes u think from all directions. This Universe is a book The Cosmic Code the Scientist are trying to read in their fashion by unveiling its Laws.
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Arup Ratan Biswas
Arup Ratan Biswas Replies to Prajakta Dighe
May 03, 2015 at 02:54 pm
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Very nicely you’ve said Prajactaji..To be slightly frank, i was delighted to came to know that you have a culture of Sitar recital, i have a Sitar & i started learning but could not continue, though i sing mainly Tagore’s songs and performed from AIR, Calcutta, in my early 20s to 30s, though sing & very fond of pure classical music including Sitar. I’ve LP record of Pandit Ravi Sankar on raga Vilawal &Vilash-khani- Todi and a jugalbandi of Bismilla & Vilayet Khan Saheb. Thanks.
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Prajakta Dighe
Prajakta Dighe Replies to Arup Ratan Biswas
May 03, 2015 at 04:27 pm
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Sitar is a very very melodious instrument. We need patience and a proper Guru. Its not that easy to play. Its my passion. I am a fan of Nikhil Benerjee, Shahid Parvez. ..
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Arup Ratan Biswas
Arup Ratan Biswas Replies to Prajakta Dighe
May 03, 2015 at 05:47 pm
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Yes you are right mam, and i know very well as I learnt it for some time.
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Krsn Dutta
Krsn Dutta
May 03, 2015 at 12:59 pm
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You are standing straight due to gravity and center of gravity is thru you .
now stretch your both hands out , certainly your mass is decentralized and your center of gravity does not pass exactly thru you .
still you are standing straight , how ?
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Prajakta Dighe
Prajakta Dighe Replies to Krsn Dutta
May 03, 2015 at 02:03 pm
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I think the center of gravity passes horizontally thru your navel. I may be wrong..
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Krsn Dutta
Krsn Dutta Replies to Prajakta Dighe
May 03, 2015 at 05:06 pm
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Center of gravity works vertically always downward .
king/queen of ….is in this forum , she may answer correctly .
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Sudhir Tongia
Sudhir Tongia
May 03, 2015 at 12:38 pm
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Nice informative blog of science of matter; however it needs connection with the science of spirituality…….
Thanks – Prajakta Dighe – Adding –
GRAVITATIONAL FORCE – KNOWN AND UNKNOWN –
Albert Einstein formulated Gravity as G = [M1* M2]2/ (d2).
Newton also described the ‘G’ as applicable in ” Laws of Motion”.
However it is still obscure as to what is the cause of Gravitational force originating from the center of the earth; thus phenomenon of Gravitation is known but the cause of Gravitation is unknown.
Secondly – Gravitational force always pulls towards itself, never pushes away from itself – But in case of plant the roots grow towards the gravitational center and shoots grow away from the gravitational center in the sky,… why this is so? Probably it is the indication that material world respects and bows towards gravitational center and spiritual attainment requires distancing from the gravitational center to rise higher.
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Prajakta Dighe
Prajakta Dighe Replies to Sudhir Tongia
May 03, 2015 at 01:49 pm
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Thanks Sudhirji,
Geotropism is caused by a plant harmone called Auxin
for few hundered years the gravity phenominon has been studied by many scientist but the fundamental technical part has not been solved. They have tried to seperate this force from matter. But now it is believed that it is a property of matter. The Large Hadron Collieder (CERN) a particle accelerator is the worlds largest machine for their(scientists) experiments going on in Physics.
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Sudhir Tongia
Sudhir Tongia Replies to Prajakta Dighe
May 03, 2015 at 02:53 pm
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Thanks for the reply –
With good wishes-
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Madhurita Jha
Madhurita Jha
May 03, 2015 at 12:25 pm
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Very nice and informative .
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Dr Sunita Gupta
Dr Sunita Gupta
May 03, 2015 at 10:37 am
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Very informative and technically a superb blog . there is a story of TRISHANKU in indian scriptures & about ashawthama being still in space .
well , on a lighter note .. falling in live is gravity ; rising in love an anti gravity pull .
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Prajakta Dighe
Prajakta Dighe Replies to Dr Sunita Gupta
May 03, 2015 at 10:52 am
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Thanks
Thanks Sunita for visiting my blog The quote u quoted is nice i read some where its Einsteins saying…..:)
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Dr Sunita Gupta
Dr Sunita Gupta Replies to Prajakta Dighe
May 03, 2015 at 11:09 am
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Hi , being a student of physics .. long back i just said it .
i mean being with mooladhar … chakra — is gravity and rising to crown chakra against the gravity … needs lots of effort & energy
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Deep Chirag
Deep Chirag Replies to Dr Sunita Gupta
May 03, 2015 at 12:58 pm
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WAh …sunita ji …samajhne wale samajh gaye hain…..
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Dr Sunita Gupta
Dr Sunita Gupta Replies to Deep Chirag
May 03, 2015 at 01:02 pm
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Ha ha ha !
Deep ji , nice to C U after such a long time .
waqt & halat insaan ko sab kuchh sikha dete hain and show the path also …
have grt sunday and days to come .
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Deep Chirag
Deep Chirag Replies to Dr Sunita Gupta
May 03, 2015 at 01:04 pm
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Hum tho is duniya ke chakkaro men ulajh gaye hai…aage aage dekho hota hai kya ….
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Dr Sunita Gupta
Dr Sunita Gupta Replies to Deep Chirag
May 03, 2015 at 01:07 pm
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Duniya mein aaye hai tau duniya ke ghan chakkaron mein bhi uljhana zaroori hai . wahan se bahar niklana hi anti gravity force hai .
rt ?
how is your daughter . my love and blessings for her !
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Deep Chirag
Deep Chirag Replies to Dr Sunita Gupta
May 04, 2015 at 12:11 pm
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Right! Evolution is always against gravity and inertia …. again Newtonian concepts and mystical too. Mehnat apni, meherbani rab di
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Dr Sunita Gupta
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May 04, 2015 at 02:06 pm
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Mehenat kabhi bhi bekar nahin jaati Deep ji ,
god gives you back with compound interest at the right time when you need it maximum !
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Virendra Kumar
Virendra Kumar
May 03, 2015 at 09:53 am
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Informative blog.
Thanks for sharing
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Sudhir Tongia
Sudhir Tongia Replies to Virendra Kumar
May 03, 2015 at 12:41 pm
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Rightly it is an informative blog – adding –
Nice informative blog of science of matter; however it needs connection with the science of spirituality…….
Thanks – Prajakta Dighe – Adding –
GRAVITATIONAL FORCE – KNOWN AND UNKNOWN –
Albert Einstein formulated Gravity as G = [M1* M2]2/ (d2).
Newton also described the ‘G’ as applicable in ” Laws of Motion”.
However it is still obscure as to what is the cause of Gravitational force originating from the center of the earth; thus phenomenon of Gravitation is known but the cause of Gravitation is unknown.
Secondly – Gravitational force always pulls towards itself, never pushes away from itself – But in case of plant the roots grow towards the gravitational center and shoots grow away from the gravitational center in the sky,… why this is so? Probably it is the indication that material world respects and bows towards gravitational center and spiritual attainment requires distancing from the gravitational center to rise higher.
With good wishes
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Prajakta Dighe
Prajakta Dighe Replies to Virendra Kumar
May 03, 2015 at 10:53 am
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Thanks.
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Soumya Srajan
Soumya Srajan
May 03, 2015 at 08:17 am
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Nicely written article prajakta. We do learn these facts in school/college -looking back at them with these nice pictures and glamorous style is a pleasure.
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Prajakta Dighe
Prajakta Dighe Replies to Soumya Srajan
May 03, 2015 at 10:56 am
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Now i am able to grasp my school subjects more vividly. Thank You
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Zeya Alam
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May 03, 2015 at 07:10 am
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Prajakta Dighe
Prajakta Dighe Replies to Zeya Alam
May 03, 2015 at 11:18 am
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Its really Amazing about His Creation, remembered lines from Omar Khayyams “Rubaiyat”The Moving Finger writes; and, having writ,
Moves on: nor all your Piety nor Wit
Shall lure it back to cancel half a Line,
Nor all your Tears wash out a Word of it.
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Pushpa Chaturvedi
Pushpa Chaturvedi
May 03, 2015 at 12:14 am
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Hi Prajakta ..I wrote a long response and it went oops 😦
Nice informative blog …
It’s this gravity which keeps the galaxy intact ….black holes colliding and stars exploding is though to be due to gravity .star wars movie was also great showing similar floating in the air 🙂
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May 03, 2015 at 07:12 am
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Ron Krumpos
Ron Krumpos Replies to Pushpa Chaturvedi
May 03, 2015 at 01:11 am
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Einstein’s Special Theory of Relativity has the surprising consequences that “the same event, when viewed from inertial systems in motion with respect to each other, will seem to occur at different times, bodies will measure out at different lengths, and clocks will run at different speeds.” Light does travel in a curve, due to the gravity of matter, thereby distorting views from each perspective in this Universe.
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Pushpa Chaturvedi
Pushpa Chaturvedi
May 03, 2015 at 12:08 am
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Gravity attracts and never repels ..and it is due to this property of gravity that literally bind the space galaxy together .
It is said that black holes colliding and stars exploding is also due the gravity in the space …even the movie Star Wars had similar scenes of floating in the space .
Nice informative blog Prajakta 🙂
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Prajakta Dighe
Prajakta Dighe Replies to Pushpa Chaturvedi
May 04, 2015 at 02:37 pm
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There are infinite black holes in the universe.When black holes come closer they cannot escape eachothers gravity their collision which is quite possible send ripples of gravitional waves in the spacetime fabric of universe .
The scientist have developed instruments to detect the waves which are bound to solve our knowledge of gravity!
Thanks Pushpa .
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Pushpa Chaturvedi
Pushpa Chaturvedi Replies to Prajakta Dighe
May 04, 2015 at 03:08 pm
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Thanks Prajakta
Wish you Happy Budha Purnima 🙂
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Sudhir Tongia
Sudhir Tongia Replies to Pushpa Chaturvedi
May 03, 2015 at 12:46 pm
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Yes true – adding –
GRAVITATIONAL FORCE – KNOWN AND UNKNOWN –
Albert Einstein formulated Gravity as G = [M1* M2]2/ (d2).
Newton also described the ‘G’ as applicable in ” Laws of Motion”.
However it is still obscure as to what is the cause of Gravitational force originating from the center of the earth; thus phenomenon of Gravitation is known but the cause of Gravitation is unknown.
Secondly – Gravitational force always pulls towards itself, never pushes away from itself – But in case of plant the roots grow towards the gravitational center and shoots grow away from the gravitational center in the sky,… why this is so? Probably it is the indication that material world respects and bows towards gravitational center and spiritual attainment requires distancing from the gravitational center to rise higher.
with good wishes.
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Pushpa Chaturvedi
Pushpa Chaturvedi Replies to Sudhir Tongia
May 03, 2015 at 01:27 pm
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Very true ..
Plants grow upwards as they get nourishment from the sun towards which they face …apart from the spiritual thought shared ,
Thanks
Regards 🙂
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Sudhir Tongia
Sudhir Tongia Replies to Pushpa Chaturvedi
May 03, 2015 at 02:55 pm
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Thanks for the reply –
With good wishes –
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Krishan Sharma
Krishan Sharma Replies to Pushpa Chaturvedi
May 03, 2015 at 10:22 am
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“Objects fall on the earth due to a force of attraction by the earth. Therefore, the earth, planets, constellations, moon and sun are held in orbit due to this attraction.
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Pushpa Chaturvedi
Pushpa Chaturvedi Replies to Krishan Sharma
May 03, 2015 at 01:27 pm
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Very true 🙂