Sai Science academy

 Big Bang Theory is most accepted theories of creation of universe, but there are some questions left unanswered from this theory. Some questions are there I will try to answer by a new theory(read this with a fresh and accepting mind)  Before starting see the BIG BANG theory  We all know that if anything or any event or any action happening should happen somewhere at some time at some place. You can take any common action it follows this rule  But According to big bang Universe is begun with a bang, then this neglects the rule, we can assume that big bang happened somewhere, but we don't know where it happened this can be asked as a question  Now what created matter and antimatter, or how was it created For now we know there are matter, antimatter and energy  OK if we assume it was created but In time of big bang what the bubble smaller than atom is created of?  If we ask questions like this then there is no end for questions, to understand something...

 Q1) What is a Black hole Ans- A Black is a region of space time where gravity is intense  Q2) How is a Black hole formed  Ans- a Black hole is formed when a massive star explodes, this process is called supernova, in this way a Black hole is formed. Did you know! Our can't form a Black hole because it is not too massive, thus when Sun explodes it is not called as supernova Q3) Where are the black holes present? Ans- The supermassive Black hole lie at the center of the Galaxies. Did you know! The name of the black hole present at center of MILKY WAY GALAXY is SAGITTARIUS A  Q4) Why black holes so intense Gravity  Ans- The gravity is so strong because matter has been squeezed into a tiny space. Did you know! The gravity in black holes are so strong that even light can escape. Hi viewers This is SSA from Learn it, Sai group, I try to spread information through my blogs and websites. Our motto of this group is Information should be free. I will reach u with a lot ...

 There is a Black hole at the centre of the galaxy At center of MILKY WAY GALAXY a Black hole named SAGITTARIUS A  SAGITTARIUS A- Sagittarius A is a bright and very compact astronomical radio source at the Galactic Center of the Milky Way. It is located near the border of the constellations Sagittarius and Scorpius, about 5.6° south of the ecliptic, visually close to the Butterfly Cluster and Shaula. Distance to Earth: 25,640 light years Radius: 22 million km Discovered: 13 February 1974 Coordinates: RA 17h 45m 40s | Dec -29° 0′ 28″ Constellation: Sagittarius Discoverers: Reinhard Genzel, Andrea M. Ghez, Harry Clive Minnett, Robert Brown, Bruce Balick  So for a galaxy there is a Black hole at the center  Hi viewers This is SSA from Learn it, Sai group, I try to spread information through my blogs and websites. Our motto of this group is Information should be free. I will reach u with a lot of topics covered. Visit my blogs and stay tuned  Follow my blog  ...

 Welcome to SSA From learn it  Charge - Charge is the property of matter that produces ans experiences electrical and magnetic effects   Point charge:- when linear size of charged body is much smaller than the distance under consideration, the size may be ignored and the charges body is called point charge.  Electrification - The process of giving charge to a body is called electrification. Methods of electrification  a) Charging by friction Two glass rods rubbed with silk or wool cloth are brought close to each other, they repel each other  The two strands of wool or two pieces of silk cloth, with which rods were rubbed, also repel each other. However, the glass rod and wool attracted each other. Similarly, two plastic rods rubbed with cat's fur repelled each other but attracted the fur. On the other hand, the plastic rod attracts the glass rod and repel the silk or wool with which the glass rod is rubbed. The glass rod repels the fur. In this process whe...

 Q1) Light   a ray or a wave or a particle Ans- In first of classes light is taught to us as a ray and it travels in a straight line  But then after in further classes its told light is a wave   Then again in higher classes it is told light is a particle Now we will get confused that is light a ray or a wave or a particle  Light is a particle called photon,  It is also a electromagnetic wave, a transverse wave Q2) How light travels in higest speed? Ans- Light is made of a particle called photon. Photon  is a massless particle, that means it has no mass, now we know that if a particle has no mass then there will be no resistance force (i.e. Friction, gravity) nothing will stop this Photon, so that's the reason light travels very fast. Hi viewers This is SSA from Learn it, Sai group, I try to spread information through my blogs and websites. Our motto of this group is Information should be free. I will reach u with a lot of topics covered. Visit my...

 Welcome to SSA  Q1) Can we hear in space Ans-Sound needs a medium to travel, space is almost vaccum, so sounds can't travel in space, so we can't hear any sound  Did you know!  If sound travels through space then sounds from Sun can reach earth and it can cause worst effects on human hearing, because on Sun a lot of volcanic activities happening every minute, now we can image the sound of volcano eruptions travelling to earth then none of the humans can hear as every time there is unnecessary sound  Q2) How do aeroplanes fly  Ans- Aeroplanes work in a principle called lift it is about pressure difference, now I will tell what's lift When an aeroplane starts to run on runway then the air above the wings blow off , this creates a low pressure region above the wing and a high pressure at bottom, so due this pressure differences aeroplanes lift off, this maintains the balance of aeroplanes Did you know! Aeroplanes change their direction through a pane at the b...

  SOLAR SYSTEM Our planetary system is located in an outer spiral arm of the Milky Way galaxy. Our solar system consists of our star, the Sun, and everything bound to it by gravity — the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune, dwarf planets such as Pluto, dozens of moons and millions of asteroids, comets and meteoroids. Beyond our own solar system, we have discovered thousands of planetary systems orbiting other stars in the Milky Way. Beyond our own solar system, there are more planets than stars in night sky. So far, we have discovered thousands of planetary systems orbiting other stars in the Milky Way, with more planets being found all the time. Most of the hundreds of billions of stars in our galaxy are thought to have planets of their own, and the Milky Way is but one of perhaps 100 billion galaxies in the universe. While our planet is in some ways a mere speck in the vast cosmos, we have a lot of company out there. It seems that we live in a...

 BIG BANG   Most astronomers believe the Universe began in a Big Bang about 14 billion years ago. At that time, the entire Universe was inside a bubble that was thousands of times smaller than a pinhead. It was hotter and denser than anything we can imagine. Then it suddenly exploded. The Universe that we know was born. Time, space and matter all began with the Big Bang. In a fraction of a second, the Universe grew from smaller than a single atom to bigger than a galaxy. And it kept on growing at a fantastic rate. It is still expanding today. As the Universe expanded and cooled, energy changed into particles of matter and antimatter. These two opposite types of particles largely destroyed each other. But some matter survived. More stable particles called protons and neutrons started to form when the Universe was one second old. Over the next three minutes, the temperature dropped below 1 billion degrees Celsius. It was now cool enough for the protons and neutrons to come toget...

 ABOUT SPACE In space, no one can hear you scream. This is because there is no air in space it is a vacuum. Sound waves cannot travel through a vacuum. 'Outer space' begins about 100 km above the Earth, where the shell of air around our planet disappears. With no air to scatter sunlight and produce a blue sky, space appears as a black blanket dotted with stars. Space is usually regarded as being completely empty. But this is not true. The vast gaps between the stars and planets are filled with huge amounts of thinly spread gas and dust. Even the emptiest parts of space contain at least a few hundred atoms or molecules per cubic metre. Space is also filled with many forms of radiation that are dangerous to astronauts. Much of this infrared and ultraviolet radiation comes from the Sun. High energy X-rays, gamma rays and cosmic rays – particles travelling close to the speed of light – arrive from distant star systems.