- Did Einstein create gravity?
- How do astronauts poop?
- Is gravity an illusion?
- Is gravity an absolute truth?
- Is gravity a fictitious force?
- What does E mc2 mean?
- Was Newton actually hit in the head by an apple?
- Who actually invented gravity?
- Are there any dead astronauts floating in space?
- Why time is faster in space?
- Does zero gravity exist?
- What is beyond outerspace?
- Was Einstein right about gravity?
- Who first theorized the existence of a black hole?
- What holds the sun in place?
- Can artificial gravity be created in space?
- Can we create gravity?
- Why is gravity not a force?
- What Einstein got wrong?
- How was gravity proven?
Did Einstein create gravity?
General relativity (GR) is a theory of gravitation that was developed by Albert Einstein between 1907 and 1915, with contributions by many others after 1915.
According to general relativity, the observed gravitational attraction between masses results from the warping of space and time by those masses..
How do astronauts poop?
Today, astronauts at the International Space Station poop into a little plate-sized toilet hole, and a fan vacuum-sucks their excrement away. A separate funnel equipped with a fan suctions their pee away.
Is gravity an illusion?
Three spatial dimensions are visible all around us–up/down, left/right, forward/backward. Gravity, too, would be part of the illusion: a force that is not present in the two-dimensional world but that materializes along with the emergence of the illusory third dimension. …
Is gravity an absolute truth?
Gravity is a force that acts between two massive bodies. If everyone agrees on the strength and direction of the gravitational field, then it’s absolute.
Is gravity a fictitious force?
According to Wikipedia : A fictitious force, also called a pseudo force, d’Alembert force or inertial force, is an apparent force that acts on all masses in a non-inertial frame of reference , such as a rotating reference frame . … Originally Answered: Is gravity a fictitious force? Yes, it is.
What does E mc2 mean?
Einstein’s Big Idea homepage. E = mc2. It’s the world’s most famous equation, but what does it really mean? “Energy equals mass times the speed of light squared.” On the most basic level, the equation says that energy and mass (matter) are interchangeable; they are different forms of the same thing.
Was Newton actually hit in the head by an apple?
The Royal Society in London is making available in digital form the key original manuscript that describes how Newton devised his theory of gravity after witnessing an apple falling from a tree in his mother’s garden in Lincolnshire, although there is no evidence to suggest that it hit him on the head.
Who actually invented gravity?
Sir Isaac NewtonSir Isaac Newton was an English mathematician and mathematician and physicist who lived from 1642-1727. The legend is that Newton discovered Gravity when he saw a falling apple while thinking about the forces of nature.
Are there any dead astronauts floating in space?
However, of the roughly 550 people who have so far ventured into space, only three have actually died there.
Why time is faster in space?
This form of time dilation is also real, and it’s because in Einstein’s theory of general relativity, gravity can bend spacetime, and therefore time itself. The closer the clock is to the source of gravitation, the slower time passes; the farther away the clock is from gravity, the faster time will pass.
Does zero gravity exist?
No Zero Gravity Contrary to popular belief, there’s no such thing as zero gravity. … The earth’s gravity keeps the moon in orbit. And astronauts are generally much closer to earth than the moon is, which means that the earth’s pull on them has to be much stronger.
What is beyond outerspace?
If by outer space you mean all that surrounds the Earth and stretches into all directions as far as people can see, then you’re talking about what astrophysicists call the universe. Physicists caution against thinking of the universe as a bubble with a well-defined border. …
Was Einstein right about gravity?
Einstein’s Theory of General Relativity represents the best understanding of gravity so far. A major prediction of his theory is the emission of gravity waves by massive dynamic systems. … Gravity waves are analogous to light waves – but very weak! They cause minute but predictable changes in size in large scale systems.
Who first theorized the existence of a black hole?
Albert EinsteinAlbert Einstein first predicted the existence of black holes in 1916, with his general theory of relativity. The term “black hole” was coined many years later in 1967 by American astronomer John Wheeler.
What holds the sun in place?
The Sun is a yellow dwarf star, a hot ball of glowing gases at the heart of our solar system. Its gravity holds the solar system together, keeping everything – from the biggest planets to the smallest particles of debris – in its orbit.
Can artificial gravity be created in space?
Dave: In space, it is possible to create “artificial gravity” by spinning your spacecraft or space station. … Technically, rotation produces the same effect as gravity because it produces a force (called the centrifugal force) just like gravity produces a force.
Can we create gravity?
Artificial gravity can be created using a centripetal force. A centripetal force directed towards the center of the turn is required for any object to move in a circular path. In the context of a rotating space station it is the normal force provided by the spacecraft’s hull that acts as centripetal force.
Why is gravity not a force?
In general relativity, gravity is not a force between masses. Instead gravity is an effect of the warping of space and time in the presence of mass. Without a force acting upon it, an object will move in a straight line. … This explains why all objects fall at the same rate.
What Einstein got wrong?
DARK ENERGY. Einstein thought his biggest mistake was refusing to believe his own equations that predicted the expansion of the Universe. … Like everyone else, Einstein believed the Universe was static and unchanging, and was horrified when his mathematically beautiful equations predicted a dynamic Universe.
How was gravity proven?
The “proof” of gravity is the demonstration that the phenomenon happens. A casual demonstration would be to hold an ordinary object out in the air at arms length and let go. … The object and the Earth just accelerated towards each other when there was no other significant force acting.