What is matter made of? ...
Why is gravity so weird? ...
Why does time seem to flow only in one direction? ...
Where did all the antimatter go? ...
What happens in the gray zone between solid and liquid? ...
Can we find a unified theory of physics? ...
How did life evolve from nonliving matter?
Answers
1. Students are introduced to the idea that matter is made up of tiny particles called atoms and molecules.
2.No force is more familiar than gravity — it's what keeps our feet on the ground, after all. And Einstein's theory of general relativity gives a mathematical formulation for gravity, describing it as a “warping” of spac
1) Students are introduced to the idea that matter is made up of tiny particles called atoms and molecules.
2) No force is more familiar than gravity — it's what keeps our feet on the ground, after all. And Einstein's theory of general relativity gives a mathematical formulation for gravity, describing it as a “warping” of space.
3) At the velocity of light, if you were somehow to reach it, your mass will be infinite and it will so require infinite force to push you, so no going beyond that speed. This is the reason time flows in a single direction.
4) One of the biggest mysteries in physics is why the universe is made entirely of matter, even though equal amounts of matter and antimatter should have been created during the big bang. All the matter and antimatter particles should have annihilated with each other since then, leaving only photons, but somehow one matter particle in a billion or so has survived to create the universe as we know it. Physicists at the BaBar experiment at Stanford in the US and the Belle experiment in Japan have now, for the first time, directly measured the amount of matter–antimatter asymmetry allowed by the Standard Model of particle physics.
5) .Hence from liquid to solid or solid to liquid the transition has to cross the grey zone. This grey zone transition is is very crucial which includes the inter molecular forces acting on the molecules and each atoms which makes the change in state from hot to cold and cold to hot.
Explanation:
This is based on ideal gas law PV=nRT.
Where P is pressure, V is volume, R is gas constant and T is temperature. Hence from liquid to solid or solid to liquid the transition has to cross the grey zone.
This grey zone transition is is very crucial which includes the inter molecular forces acting on the molecules and each atoms which makes the change in state from hot to cold and cold to hot.
The best example is ice crystal formation and water formation from ice crystal .
Hence the inter molecular force of attraction happens to be involved with changes in grey zone.
6) Einstein intensely searched for, but ultimately failed to find, a unifying theory. (But see:Einstein–Maxwell–Dirac equations.) More than a half a century later, Einstein's dream of discovering a unified theory has become the Holy Grail of modern physics.
7) If the universe did begin with a rapid expansion, per the Big Bang theory, then life as we know it sprung from nonliving matter. ... It proposes that in Earth's prebiotic history, simple organic matter was exposed to energy in the form of volcanoes and electrical storms.