Crookes observed that the cathodic rays are deflected by a magnetic field and concluded that this beam is negatively charged. Thomson established that the beam is composed from a new type of particles called by Fitzgerald electrons. But many scientists contributed to the discovery of the electron.
As of the 1990s, scientists have proven the existence of five states of matter: solid, liquid, gas, plasma, and Bose-Einstein condensate.
according to jj thomsons model of an atom,an atom consists of a positively charged sphere with electrons in it.however,it was later found that positively charged particles reside at the center of the atom called nucleus,and the electrons revolve around the nucleus.
J.J. Thomson first postulated the existence of the electron in 1897 through his experiments with cathode rays. He proposed that cathode rays were composed of negatively charged particles, which he called "corpuscles" and later became known as electrons.
No, chloride cannot exist without chlorine. Chloride is an anion that is derived from chlorine by gaining an electron. Chlorine is a chemical element that is necessary for the existence of chloride.
J.J Thompson discovered the electron. He also performed the Cathode Ray Tube Experiment and that told him that electrons are negative J.J Thompson discovered the electron. He also performed the Cathode Ray Tube Experiment and that told him that electrons are negative
J.J. Thompson proved the electron's existence through the cathode ray experiment.
Benjamin Franklin proved the existence of electricity.
Thomson's experiments with cathode rays proved the existence of negatively charged particles, which he called electrons. This discovery provided evidence for the existence of subatomic particles and laid the foundation for the development of the modern atomic theory.
Heinrich Hertz proved the existence of electromagnetic waves. The unit of frequency, hertz (Hz), is named in his honor.
‎J. J. Thomson discovered the electron in experiments done in 1897.
The existence of francium in cosmos was not proved.
h. Immanuel Kant
Ernest Rutherford
that protons can ,move to one electron to the other
James Clerk Maxwell first theoretically predicted the existence of electromagnetic waves, however David Edward Hughes is partially credited as he made the first successful radio transmission. Heinrich Hertz is the man who actually proved Maxwell's theory of the existence of electromagnetic waves.
thermal energy
It cannot be proved or disproved because all premises will be inconclusive.