How long did it take Nikola Tesla to invent the ac motor?
Tesla pointed out the inefficiency of Edison's direct current electrical powerhouses that have been build up and down the Atlantic seaboard. The secret, he felt, lay in the use of alternating current, because to him all energies were cyclic. Tesla introduced his motors and electrical systems in a classic paper, "A New System of Alternating Current Motors and Transformers" which he delivered before the American Institute of Electrical Engineers in 1888. One of the most impressed was the industrialist and inventor George Westinghouse. One day he visited Tesla's laboratory aTesla Statuend was amazed at what he saw. Tesla had constructed a model polyphase system consisting of an alternating current dynamo, step-up and step-down transformers and A.C. motor at the other end. The perfect partnership between Tesla and Westinghouse for the nationwide use of electricity in America had begun. In 1882 Tesla conceives of AC induction motor and in 1883 Tesla constructs the first polyphase AC motor.
What organisms are not killed during pasteurization?
Some heat-resistant organisms like bacterial spores, thermoduric bacteria, and certain enzymes may survive pasteurization processes at typical temperatures and times. These organisms can affect the shelf life and safety of the product if not properly controlled through other means.
How did Schrodinger and De Broglie change Bohr's model of an atom?
Neils Bohr made the ASSUMPTION that electrons could only exist in discrete energy levels when the electrostatic field of a nucleus -- he made no attempt to show WHY this was so.
Louis de Broglie postulated that electron movement could be described as a wave, with the wavelength being equal to Planck's Constant divided by the electron's momentum. Starting with this postulate, one can derive that the only permitted radial orbits of an electron are those with a circumference equal to a multiple of these wavelengths.
Erwin Schrodinger devised a mathematical formula for which one could derive these energy levels -- and a lot more. As such, Schrodinger's Equation was more fundamental to our understanding of sub-atomic reality. Schrondinger viewed his wave function (more precisely, the product of the wave function) as the charge density of a smeared-out electron.
Although you didn't ask, it was Max Born who showed that the wave-function product was, instead, the probability of finding a point-like electron at a specific place and time.
How does scientists perform atifical transmutation?
Scientists perform artificial transmutation by bombarding the nucleus of an atom with high-energy particles such as protons or neutrons. This can induce a nuclear reaction, causing the atom's nucleus to change, resulting in the creation of a new element or isotope. This process is commonly used in nuclear physics and can be utilized to produce new elements for research or practical applications.
What are Nikola Tesla's greatest accomplishments?
Tesla made possible the basis of all wireless devices. He had about 700 patents and 3 of them are these:
1882 Tesla discovered the rotating magnetic field.
1887 Tesla registered his patent for electromagnetic motors.
1891 Tesla invented a transformer for the production of high frequency and high voltage electricity.
Yes, John Dalton was an English chemist, meteorologist and physicist. He is best known for his pioneering work in the development of modern atomic theory, and his research into color blindness.
Where does the international system of units is used by scientists?
Scientists everywhere use SI units... for the most part. There are a few recidivists who have a preference for other units under certain circumstances, such as for example preferring calories to joules for thermodynamics. It's also fairly common for people to use the so-called "cgs" units instead of the modern SI "mks" units (centimeter/gram/second as opposed to meter/kilogram/second).
Who are some famous assamese scientists?
Some famous Assamese scientists include Jyoti Prasad Agarwala (film maker, playwright, and composer), Dr. Anil Kakodkar (nuclear scientist and former chairman of the Atomic Energy Commission of India), and Dr. Bibha Chowdhuri (physicist known for her work on cosmic rays).
Which scientist was able to quantify the electrons charge and estimate its specific mass?
J.J. Thomson was able to quantify the electron's charge and estimate its specific mass through his experiments with cathode rays in the late 19th century. His work played a significant role in the development of the atomic model and the understanding of subatomic particles.
Exhaust velocity is the speed at which the combustion gases are expelled from a rocket engine. It is a key parameter that determines the thrust generated by the engine and is crucial for calculating the overall performance of the rocket. A higher exhaust velocity results in greater thrust and efficiency of the rocket engine.
What is the name of the variable that the scientist controls in an experiment?
Control group or mean- it is the point to which variances will be compared
What did Antoine-Laurent Lavoisier contribute to science during the 1700s?
Antoine-Laurent Lavoisier is known as the "father of modern chemistry." During the 18th century, he made significant contributions to the field of chemistry by establishing the law of conservation of mass, developing the modern system of naming chemical compounds, and helping to disprove the concept of phlogiston. His work laid the foundation for our understanding of chemical reactions and the composition of matter.
Which scientist said that the light is a wave?
Thomas Young, an English scientist, is credited with the double-slit experiment in the early 19th century which provided strong evidence for the wave nature of light in his demonstration of interference patterns.
Did John Davy brother of Sir Humphrey Davy have any children?
Yes he did and he built Trelissick house in Cornwall in 1790
What do you call someone who studies potions?
A person who studies potions would be called an alchemist or a potion maker.
What did thomson's cathode-ray tube experiment help scientists learn?
Thomson's cathode-ray tube experiment helped scientists understand that electrons are negatively charged particles within atoms. This experiment contributed to the development of the plum pudding model of the atom, which proposed that electrons are embedded in a positively charged sphere within the atom.
What was max planck major contribution to the atomic theory?
I don't know of atomic theory, but he came up with the idea that light energy acted like packetts of energy that he called photons. Thru some theoretical calculations he came up with Plank's constant that deals with the energy of different wavelengths of light.
Louis de Broglie was a French scientist who proposed the idea of wave-particle duality, suggesting that all particles exhibit both wave and particle properties. His work laid the foundation for the development of quantum mechanics and our modern understanding of atomic structure.
In the bohr model of the atom which characteristics of electrons is limited?
In the Bohr model, electrons are limited in their energy levels or orbits around the nucleus. Electrons can only exist in specific quantized energy levels, and they are restricted to move in circular orbits without emitting radiation.
A chemist or materials scientist would be the most likely to apply for a job in developing a more effective laundry stain remover. They would use their knowledge of chemicals and materials to create new formulations that can effectively remove stains from fabrics.
Why can scientist ignore the forces of attraction among particles in a gas undr ordinary conditions?
Scientists can sometimes ignore the forces of attraction among particles in a gas under ordinary conditions because the kinetic energy of gas particles is much greater than the attractive forces between them. This means that the particles move around freely and independently of each other, resulting in the ideal gas behavior that doesn't consider intermolecular forces. This simplification allows for easier mathematical modeling and analysis of gas behavior.
What is the proof that light travels in straight light?
Light actually travels in waves.This is known to be true because there are only 3 ways that energy can be transferred. As you probably already know, light does not need a medium to travel through because it travels through space. Electromagnetic waves are the only form of energy transfer that do not require a medium to travel through.
What scientist was best known for explaining gravity?
Probably this question refers to Isaac Newton. Of course, the modern explanation of gravity is due to Albert Einstein.
What do you call a person who studies bombs?
A person who studies bombs is called an explosives expert or ordnance specialist. They are trained in the science of explosives and bomb-making techniques to prevent and investigate incidents involving explosives.
Why did Nikola Tesla come to America?
He couldn't make the inventions he was planning on doing. Nikola Tesla arrived in New York on June 6, 1884, set out to look for the friend he would live with, stopped to do an engine repair job he happened to find along the way, and met with Thomas Edison, a meeting he described as "a memorable event in my life." He quit working for Edison and started his own laboratory.