Skip to main content

Posts

Showing posts with the label Gravity

Featured post

Global Climate Change

Climate change is the change in average patterns of natural events or phenomena such as temperature and rainfall over time in a region or around the world. Changes may occur naturally as well as occur due to human activities posing threats to nature. How Climate Change Occur / Causes of Climate Change There has been a drastic increase in climate change since the industrial revolution around the globe. Greenhouse gases are the primary cause behind these climatic changes. These gases trap and hold light energy reaching the earth’s surface from the sun, and radiate it in the form of infrared heat. Eventually, this process causes an increase in the average temperature of the atmosphere of our globe. Carbon dioxide (CO2), methane (CH4), nitrogen oxide (N2O), and chlorofluorocarbons (CFCs) are major greenhouse gas contributors.  Carbon DiOxide (CO 2 ) .  CO2 is generated due to natural processes (i.e. volcanic eruptions) as well as through human activities (deforestation and burning...
2 comments
Read more

Did Universe Popped out of NOTHING

 If we succeed in getting rid of everything from a part of space i.e. from all the planets, stars, atoms, particles, even light and radiation etc, this space still have weight. It turns out that NOTHING is not nothing but it is something. How is that possible? Space is bubbling with virtual particles that pop in and out of existence. These particles do this in such a short time scale so the laws of classical Physics forgives the creation of these ghost particles which seem to come out of nothing. The laws of Quantum Mechanics allow this.  To visualize, consider an empty space within a proton. Since most of our physical world is made up of protons and neutrons, this so called empty space (inside protons) gives mass of proton. "Empty space is actually full of quarks and Gluon Field Fluctuations, so empty space is not empty" (Professor Derek Leinweber, University of Adelaide).  Here is the simple visualization. 0 represents nothing. But 0 can also be expressed as 1+(-1) or 1...
8 comments
Read more

The Dark Matter and Dark Energy

    Matter as we know it, atoms, stars, the galaxies, planets & trees, rocks and us, this matter accounts for less than 5% of the known universe, about 25% is dark matter and 70% dark energy, both of which are invisible. This is kind of strange because it suggests that everything we experience is really only tiny fraction of reality. We really have no clue that what dark matter and energy are or how they work .We are pretty sure they exist though, so what do we know? Dark matter is the stuff that makes it possible for galaxies to exist. When we calculate, what the universe is structured the way it is, it quickly became clear that it's just not enough normal matter. The gravity of the visible matter is not strong enough to form galaxies and complex structures, the stars would more likely be scattered all over the place and not form galaxies. So we know that there is something else inside and around them, something that doesn't emit or reflects light, something dark. Bu...
4 comments
Read more

Gravity - A Brief History in Science

     In 1687, Isaac Newton changed the way we humans see Cosmos by connecting a Force we experience at earth with the force that controls the movement of heavy bodies (That of course is Gravity) and he expressed it analytically using remarkable equations we still use today F = G(m 1 m 2 )/R 2 (The law of universal Gravitation).       This equation   explains the movement of planets and it remains very accurate even today under most circumstances. But it had a few problems, 1 of which is the mysterious idea of the " Action-at-a-Distance " that even Newton had troubled accepting. This was the idea that a massive object could exert a force instantaneously to another massive object at a distance without ever touching it.      Later in 1859, Newton's laws could not explain the "Rate of Precession of Mercury". The way its elliptical orbit rotates around the Sun and is not fixed. Newtom explains gravity as innate   property of objec...
3 comments
Read more