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Albert Einstein
Includes questions about the life and works of physicist Albert Einstein.
5,059 Questions
Who came up with the formula E equals mc?
I don't know who came up with E = mc, but Einstein came up with E = mc2.
What are the two postulates from which Einstein developed the theory of relativity?
Einstein's two Relativity postulates are : 1. The Principle of Relativity or all motion is relative. Einstein discussed this in the example of a magnet and a conductor in motion relative to each other;
2 the second postulate is that light is always propagated in empty space with a definite velocity c which is independent of the state of motion of the emitting body.
How did albert Einstein get the crazy hair?
He did'nt comb his hair. Einstein was more focused on solving equations and so therefore was not so concerned with things like hair, and being Jewish, you do the math. The fun answer would be he was working on some kind of fantastic device, which shoked him and caused his hair to stick up.
How did albert einstein help with technology?
Albert Einstein's work in theoretical physics greatly influenced the development of technology, particularly in the fields of nuclear energy, semiconductors, and lasers. His theories on relativity led to advancements such as GPS technology, while his work on the photoelectric effect laid the groundwork for modern electronics. Einstein's insights continue to inspire innovation in various technological applications today.
What year did Albert Einstein create electricity?
Albert Einstein did not create electricity. He is known for his theoretical work in physics, particularly the theory of relativity and the equation E=mc^2.
Can energy be transformed into matter and vice-versa?
Yes, according to Einstein's theory of relativity (E=mc^2), energy can be transformed into matter and vice versa. This has been experimentally confirmed in particle accelerators where high-energy collisions can create particles from pure energy and particles can annihilate to produce energy.
How did mileva and Einstein meet?
Mileva Marić and Albert Einstein met while studying at the Polytechnic Institute in Zurich, Switzerland in the late 1890s. They were both students in the same physics program and their shared interest in science and mathematics brought them together. This eventually led to a romantic relationship and marriage.
One of the most extraordinary things
about Einstein's energy-mass equation
is its simplicity. However, we still need to
make sure we are using the correct units
when solving the equation,
and that we understand the answer.
The purpose of this page is to solve
the equation as it is and give some idea of
the huge amount of energy locked up in even the
smallest amount of mass.
The Components of the Equation.If we break the equation E = mc2into its components and write out the terms fully we get:
- E = energy (measured in joules)
- m = mass (measured in kilograms)
- c = the speed of light (186,000 miles per second, or 3 ´ 108 ms-1)
We will now examine each of the terms in a little more detail.
Energy.
Energy is measured in joules (J).
How much energy is one joule?
Not very much really.
If you pick up a large apple and raise it
above your head you will have
used around one joule of energy in the process.
On the other hand we use up huge
amounts of energy every time we switch on a light.
A 100 watt light bulb uses 100 joules of energy every second,
i.e. one watt is one joule per second.
Mass.
Mass is a measure of a body's resistance to acceleration.
The greater the mass the greater the resistance to acceleration,
as anyone who has ever tried to push a heavy object knows.
For our purposes here, we can also think of mass as the
amount of matter in an object.
Mass is measured in kilograms (kg), 1 kg is
about the same as 2.2 pounds.
Note that we haven't said
what the mass is composed of.
In fact it could be anything. It doesn't matter
if we use iron, plastic, wood, rock or gravy.
The equation tells us that whatever the
mass is it can be turned
into energy
(whether it is practical to actually
do so is another matter and will be dealt with in later pages in this series).
The speed of light.
The speed of light is close to 186,300 miles per second
(300,000 km per second). In order to make the equation
"work" we need to convert these numbers into
units that are more suited to our purposes.
In physics, speeds are measured in metres
per second. This is usually abbreviated to ms-1;
that is "metres times seconds to the minus one".
Don't worry if you don't understand this notation.
We could equally write m/s but using ms-1
makes the mathematics easier in the long run. Likewise,
we could either say that the speed of light is
300,000,000 metres per second, or, as is
more usual, express the same figure in scientific notation: 3 x 108 ms-1.
Solving the Basic Equation.Now that we have everything in orderlet's have a go at solving the equation.
We will use a mass of
1kg to keep things simple and I will show all of the workings of the equation.
So, with 1kg of mass (around 2.2 pounds) we get:
Note how the units were dealt with and that
kg m2 s-2 is the same as joules
(a rigorous proof of this is outside the scope of these pages).
So from 1kg of matter, any matter,
we can get out 9 x 1016 joules of energy. Writing that out fully we get:
That is a lot of energy! For example,
if we converted 1 kg of mass into
energy and used it all to power a 100
watt light bulb how long could we keep it lit for?
The first thing to do is divide the result by watts
(remember that 1 watt is 1 joule per second):
How long is that in years?
A year (365.25 days) is 31,557,600 seconds,
so we get:
That is a very long time!
Of course,
converting mass into energy
is not quite that simple, and apart
from with some tiny particles in
experimental situations has never
been carried out with 100% efficiency. Perhaps that's just as well.
Conclusion.We have seen that the equation is very easy to solveas it is and that for even a small amount of
mass a huge amount of energy can, at least in theory,
be released. Other pages in this series show how the
energy can be released in practical ways
as well as using the equation in a more mathematical and physical way.
E = mc2
A huge amount of energy from a small amount of mass.
That is used as a conversion factor between mass and energy.
Was it possible for Albert Einstein to use computers?
It is not possible for Albert Einstein to use computers because he has short term memory. But he can use computers with programming which makes him remember about his works.
What is Albert Einsteins famous formula?
Einstein's famous formula is the formula for the mass-energy equivalence: E=mc2
This describes how mass can be turned into energy and vice versa. Thus E,energy= mass X speed of light x speed of light (a very big number). This means a tiny amount of mass converted to energy is huge and is why atom bombs are so powerful.
Why is E equals mc2 important?
Einstein worked on it and in the end helped us win the war because it is what makes an atom bomb.
How was Albert Einstein child life?
He seems to have had a happy childhood and a good relationship with his family. But he had what today would be called learning disabilities. He was very slow to learn to speak, and at first, he also was not a very good student. His parents worried that there might be something wrong with him, but he gradually improved after receiving extra help. He was a very curious and inquisitive child who loved to explore and observe. He also enjoyed music and learned to play the violin. Fortunately, Einstein (who was Jewish) was growing up before his native country (Germany) descended into Naziism, so his childhood was not very dangerous or frightening. But years later, when he was an adult and a famous professor, he had to leave his country and come to America for his own safety.
How do i be the smartest in your class?
By studying very hard and having a good attitude. Wanting to be smart is a great start, not being afraid to look stupid by asking questions is even better.
Formal education tends to introduce "rules", and patterns and modes of thinking not conducive to radical or revolutionary discoveries and insights (sometimes called "thinking out of the box"). Those learned modes and patterns can still impede otherwise great thinkers, years after they leave school.
What subjects did albert einstein excel at?
Albert Einstein excelled in mathematics and physics from a young age. He showed a particular aptitude for calculus and geometry, which laid the foundation for his groundbreaking work in theoretical physics. Additionally, he was skilled in subjects like philosophy, which influenced his thinking about science and the nature of reality. His strong performance in these areas ultimately contributed to his development of the theory of relativity and other significant scientific advancements.
How much percent of brain did albert Einstein use?
100% hes smarter than me at science and all that. But im better at texting or anything. He wouldnt even know how to use an xbox. Does that mean i used mor brain percentage? No because we all use 100%. Does that make any sense?
Is Albert Einstein use more percent of his brain then other scientist?
All are 100% even me. All because someone knows how to do something better doesnt mean you use less. If he were to have a xbox in front of him i would be better than him at it doesnt mean i used more brain percentage
