There were no technologies. The atom was discovered by the ancient Greek's. They figured that eventually if you kept on dividing something, it would get so small that you wouldn't be able to divide it anymore. There would be just one tiny particle left. They called this particle the atom. Of course over time the atom proved not to be the smallest particle with the discovery of the proton, electron and neutron.
The experiment that was used to discover the electron was the cathode ray experiment performed by JJ Thomson. In the presence of a magnetic field, cathode rays were observed to bend. When the poles were reversed, the ray bent the opposite direction. This let JJ Thomson deduce that they were actually negatively charged particles.
niels bohr discovered that atoms had electrons
Cathode Rays resulted in the discovery of electrons
an electron microscope
cathode ray
science
Yes, it is true: Thomson in 1897.
electron micrograph
You can do many, many experiments with the light. I'll just mention few categories:- Reflection of the light - Refraction of the light - Spectrum related experiments - Experiments that prove the wave nature of the light (interference) - Experiments that prove the particle nature of the light - Experiments that measure the speed of the light in space - if small scale, usually using interference etc... You may search on internet for specific experiments, by using the words of the categories mentioned upper, to narrow your search results.
This is a chemical element. You can find the how many electron in a single atom by using a periodic table.
This is a chemical element. You can find the how many electron in a single atom by using a periodic table.
Experiments with cathode rays led to the discovery of the electron.
Yes, it is true: Thomson in 1897.
yas
Cell are not discovered using electron microscopes.
yes
This is the electron on the external shell.
electron micrograph
An electron is part of an atom.The electron can hold an electric charge. Some atoms have only one electron.
Interactions can be studied in the real world by examining patterns, using natural experiments, and setting up manipulative experiments.
This is a chemical element. You can find the how many electron in a single atom by using a periodic table.This is a chemical element. You can find the how many electron in a single atom by using a periodic table.
This is a chemical element. You can find the how many electron in a single atom by using a periodic table.
Thomson discovered the electron in the year 1897.His work put forward a new theory, that atom was made up of small particles.Thus he discovered the electrons. He proved his theory using the cathode ray tube.