What is antimatter?: Another good simple explanation from Don Lincoln. How J.J. Thomson discovered the electron: This is a great little video that explains how scientists such as Thomson came to the conclusion that electrons must be charged particles inside atoms.Please...
It has been known that elements are broken down into basic units of a given weight since the early 1800s, inan insightthat came from the English scientistJohn Dalton. He considered these units to be fundamental, indivisible particles, hence his use of the Greek word "atomos". Things got mo...
9 Faraday was the scientist who discovered electromagnetic induction. 10 Gain is the number of times an amplifier a signal. 1 These two laws are the foundation on which all other laws in electricity are built. 2 In all resistances through which a current flows, electric energy is converted ...
科技英语翻译:what从句定语从句 ,科技英语翻译从句,3.Thewhat-clause(1)commoncasea.“What”belongstoaninterrogativepronoun:什么/怎么样/多大(尺寸,大小,数值等)e.g.ItisnecessarytofindwhatforcewillbeexertedonchargeA.必须求出多大的力将作用在电荷A上。ThepurposeistodetermineforwhatvalueofRLthisPLismaximum.目的...
What subatomic particle was discovered using the cathode ray tube? What is the double slit experiment? What is an electron in quantum physics? What is aether in quantum physics? What was most notable about Rutherford's gold foil scattering experiment?
The center of an atom, called the nucleus, is composed of protons and neutrons. Protons are positively charged; neutrons have no charge at all; and electrons are negatively charged. The proton-to-electron ratio is always one to one, so the atom has a neutral charge. For example, a ...
Even though the theory of the Higgs boson was proposed some fifty years ago, it was only in the last two decades that scientists finally discovered the particle in the lab. In the large ring collider (where particles are bombarded into each other to create other particles) at CERN, physicist...
Norwegian scientist Kristian Birkeland proposed that electrons emitted from sunspots produced the atmospheric lights after being guided toward the poles by Earth's magnetic field. The theory would eventually prove correct, but not until long after Birkeland's 1917 death. Photographing the northern lights...
process that generates sugars for the plant, and is named afterMelvin Calvin, theNobel Prize-winning scientist who discovered it decades ago. The Calvin cycle uses the ATP and NADPH produced in chlorophyll to generate carbohydrates. It takes plate in the plant stroma, the inner space in ...
Scientist with the British Antarctic Survey Sandra McInnes is a tardigrade researcher with the British Antarctic Survey. She also is an associate editor dedicated to tardigrade-related manuscripts at the journal Zootaxa. How big are tardigrades? Tardigrades can be seen with the naked eye, but just...