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Albert Einstein
Includes questions about the life and works of physicist Albert Einstein.
5,059 Questions
Did albert Einstein really build time machine?
No, Albert Einstein did not build a time machine. While he made significant contributions to physics and the understanding of time, there is no evidence to support the idea that he built a functioning time machine.
Why does classical physics fail to explain the photoelectric effect?
Classical physics fails to explain the photoelectric effect because it is based on the wave theory of light, which predicts that the energy of a wave is proportional to its intensity. However, the photoelectric effect shows that the energy of ejected electrons is dependent on the frequency of light, not its intensity, as predicted by quantum theory.
What year did albert Einstein discover electrons in the atom?
Albert Einstein did not discover electrons in the atom; they were actually discovered by J.J. Thomson in 1897 through his experiments with cathode rays. Einstein's work focused on the photoelectric effect and his theory of relativity.
How is Albert Einstein so important today?
Albert Einstein's work in physics laid the foundation for many modern technologies and scientific advancements, such as GPS systems, nuclear energy, and studies in quantum mechanics. His theories on relativity continue to influence our understanding of the universe, and his unique approach to problem-solving and creativity serves as an inspiration for current and future scientists.
What is the motivation behind the inventions of albert Einstein?
Albert Einstein was motivated by a deep curiosity about the workings of the universe and a desire to understand the fundamental principles of physics. He sought to unravel the mysteries of space, time, and energy through his groundbreaking theories, such as the theory of relativity, which revolutionized our understanding of the universe. Einstein's inventions were driven by a passion for scientific exploration and a commitment to pushing the boundaries of human knowledge.
Why is Albert Einstein's hair so weird?
Albert Einstein's unique hairstyle was a result of his disregard for societal norms and personal grooming preferences. He chose not to conform to typical styles and focused more on his scientific work rather than his appearance. Over time, his distinctive hairstyle even became a symbol of his unorthodox thinking and rebellious nature.
Did Albert Einstein have any nobel prizes for physics?
Yes, Albert Einstein was awarded the Nobel Prize in Physics in 1921 for his discovery of the photoelectric effect, which was pivotal for the development of quantum theory.
What is the relationship between energy and mass according to Einstein?
E=MC2
energy=mass*(speed of light in a vacuum)squared
so say you lose 0.001kg of mass, thats
E=0.001*1,079,252,848.8km/h
E=1,079,252.8488
so 1,079,252.8488 joules of energy for every gram of mass lost
Physics is a branch of science that deals with the study of matter, energy, motion, and the interactions between them. It seeks to understand the fundamental laws governing the universe and explain natural phenomena through experimentation, observation, and mathematical modeling.
How did Albert Einstein's discovery change the world?
Albert Einstein's theory of relativity revolutionized our understanding of space, time, and gravity. It paved the way for advancements in technology, such as GPS systems, and led to developments in areas like nuclear energy. Einstein's work continues to influence scientific research and shape our understanding of the universe.
Is there any importance in photoelectric effect?
One of the most revolutionary concepts in physics is the photoelectric effect. The photoelectric effect occurs when radiant energy is impinged on various metals and electrons are ejected from the metal surface. The ejected photoelectrons have a certain kinetic energy which can be measured by the produced voltage. Photoelectric current cannot be explained by the wave theory as diffraction and interference can, however. The photoelectric effect is important because it revealed some of the limitations of the classical wave theory and it gave closer insight into the nature of light- namely the quantization as photons.
What does E stand for in physics?
E typically stands for energy in physics. It can represent different forms of energy such as kinetic energy, potential energy, or thermal energy, depending on the context.
What did albert Einstein do that made him crazy?
Albert Einstein was not crazy. There are rumors that he experienced mental health issues or had eccentric behaviors, but these claims are mostly unfounded. Einstein was a brilliant physicist who made groundbreaking contributions to the field of theoretical physics, including the development of the theory of relativity.
What does Albert Einstein mean by E equals mc2?
Albert Einstein is perhaps the most famous scientist of this century. One of his most well-known accomplishments is the formula
Despite its familiarity, many people don't really understand what it means. We hope this explanation will help!
This is a tiny mass indeed. But in everyday quantities of matter there are a lotof atoms! For instance, in one kilogram of pure water, the mass of hydrogen atoms amounts to just slightly more than 111 grams, or 0.111 kg.
Einstein's formula tells us the amountof energy this mass would be equivalent to, if it were all suddenly turnedinto energy. It says that to find the energy, you multiply the mass by the square of the speed of light, this number being 300,000,000 meters per second (a verylarge number):
= 0.111 x 300,000,000 x 300,000,000
= 10,000,000,000,000,000 Joules This is an incredible amount of energy! A Joule is not a large unit of energy ... one Joule is about the energy released when you drop a textbook to the floor. But the amount of energy in 30 grams of hydrogen atomsis equivalent to burning hundreds of thousands of gallons of gasoline!
If you consider all the energy in the full kilogram of water, which also contains oxygen atoms, the total energy equivalent is close to 10 million gallons of gasoline!
Can all this energy really be released? Has it ever been?
The only way for ALL this energy to be released is for the kilogram of water to be totally annhilated. This process involves the complete destruction of matter, and occurs onlywhen that matter meets an equal amount of antimatter... a substance composed of mass with a negative charge. Antimatter does exist; it is observable as single subatomic particles in radioactive decay, and has been created in the laboratory. But it is rather short-lived (!), since it annihilates itself and an equal quantity of ordinary matter as soon as it encounters anything. For this reason, it has not yet been made in measurable quantities, so our kilogram of water can't be turned into energy by mixing it with 'antiwater'. At least, not yet.
Another phenomenon peculiar to small elementary particles like protons is that they combine. A single proton forms the nucleus of a hydrogen atom. Two protons are found in the nucleus of a helium atom. This is how the elements are formed ... all the way up to the heaviest naturally occurring substance, uranium, which has 92 protons in its nucleus.
It is possible to make two free protons (Hydrogen nuclei) come together to make the beginnings of a helium nucleus. This requires that the protons be hurled at each other at a very high speed. This process occurs in the sun, but can also be replicated on earth with lasers, magnets, or in the center of an atomic bomb. The process is called nuclear fusion.
What makes it interesting is that when the two protons are forced to combine, they don't need as much of their energy (or mass). Two protons stuck together have less mass than two single separate protons!
When the protons are forced together, this extra mass is released ... as energy! Typically this amounts to about 0.7% of the total mass, converted to an amount of energy predictable using the formula .
Elements heavier than iron are unstable. Some of them are veryunstable! This means that their nuclei, composed of many positively charged protons, which wantto repel from each other, are liable to fall apart at any moment! We call atoms like this radioactive.
Uranium, for example, is radioactive. Every second, many of the atoms in a chunk of uranium are falling apart. When this happens, the pieces, which are now new elements (with fewer protons) are LESS massive in total than the original uranium atoms. The extra mass disappears as energy ... again according to the formula ! This process is called nuclear fission.
Both these nuclear reactions release a small portion of the mass involved as energy. Large amounts of energy! You are probably more familiar with their uses. Nuclear fusionis what powers a modern nuclear warhead. Nuclear fission(less powerful) is what happens in an atomic bomb (like the ones used against Japan in WWII), or in a nuclear power plant.
Albert Einstein was able to see where an understanding of this formula would lead. Although peaceful by nature and politics, he helped write a letter to the President of the United States, urging him to fund research into the development of an atomic bomb ... beforethe Nazis or Japan developed their own first. The result was the Manhatten Project, which did in fact produce the first tangible evidence of ... the atomic bomb!
Adeel Quddus One of Einstein's great insights was to realize that matter and energy are really different forms of the same thing. Matter can be turned into energy, and energy into matter.
For example, consider a simple hydrogen atom, basically composed of a single proton. This subatomic particle has a mass of
0.000 000 000 000 000 000 000 000 001 672 kg
What is theory of relativity in short?
The theory of relativity, formulated by Albert Einstein, describes how space and time are intertwined and how they are affected by gravity. It has two main parts: the special theory of relativity, which deals with objects moving at constant speeds, and the general theory of relativity, which includes acceleration and gravity. This theory revolutionized our understanding of the universe and has important implications for modern physics.
What year did Albert Einstein became a scientist?
Albert Einstein became a scientist in the late 19th century, specifically around the year 1900 when he published his groundbreaking papers on theoretical physics. By 1905, he had established himself as a leading physicist with his theory of relativity and other significant work.
What are the contribution of albert einstien?
1 Special Theory of relativity
2 General Theory of relativity
The theories of relativity are too complex to be explained here .
3 Photo electric effect
Einstein proved that light has both a particle nature and wave nature.He thus, laid the foundation of Quantum Mechanics. The details of this theory will not fit into this page.
4 Einstein's refrigerator
The only product Einstein invented was an absorption refrigerator that used no electricity.He developed it in 1926 with former student, Leo Szilard in 1926. Designed for use in under developed countries, it had no moving parts and operated only with a heat source. It is also the only product patented by Einstein (1930 in US).
What is the statement of time dilation by Einstein?
In a broad sense it means that you see clocks carried by people moving relative to you move slowly. This effect is totally negligible in every day life by the way, the speeds need to approach that of light for the effects to be apparent.
More specifically it states that time moves slower in inertial frames moving relative to yours.
How much did he weigh when Albert Einstein died?
When Albert Einstein died in 1955, he weighed around 130 pounds (59 kg).
Why is the theory of relativity accepted by scientists?
The theory of relativity is accepted by scientists because it has been extensively tested through experiments and observations, and it has consistently provided accurate predictions that have been confirmed. It also provides a more comprehensive and accurate description of gravity, spacetime, and the behavior of objects at high speeds compared to classical physics.
The question hints at an interesting tid-bit that arises in Physics, particularly in regard
to Relativity: The mass of an object figures in to any calculation of its inertia, and also
in to any calculation of the gravitational force between it and any other object. The
question is raised as to whether the object's inertial mass and its gravitational mass are
equal, and according to all the experimental and observational evidence so far, the
answer is yes, they're equal, and we only have to talk about the object's 'mass', without
making the distinction.
Assuming that that's true, then it's the object's 'mass' that increases with its speed,
and the mutual force of gravitational attraction between it and other objects changes
proportionately.
When did Albert Einstein discover the theory of relativity?
Einstein's theory of special relativity, proposed in 1905, states that nothing in the universe can travel faster than the speed of light in a vacuum.
!!!!! But researchers at the CERN lab near Geneva claim they have recorded neutrinos, a type of tiny particle, traveling faster than the barrier of 186,282 miles (299,792 kilometers) per second.!!!!! << major breakthrough..
Because we have based almost everything on his relativity E=MC^2
What German physicist won a nobel peace prize for the quantum theory in 1918?
Max Planck was the German physicist who was awarded the Nobel Prize in Physics in 1918 for originating the quantum theory.
What techniques did Albert Einstein use?
Albert Einstein used a combination of intuition, thought experiments, and innovative mathematical frameworks to develop his theories. He also employed visualization techniques and practical analogies to help understand complex concepts more easily. Einstein's ability to think outside the box and question accepted beliefs led to his groundbreaking contributions to physics.
