The cathode "ray' must have been made up of negatively charged particles, now called electrons.
It was the investigator J. J. Thomson who did experiments with an early cathode ray tube. You'll find a link below.
J. J. Thomson experimented with cathode rays and discovered the electron, leading to the development of the plum pudding model of the atom.
J.J. Thomson discovered electrons are negative by conducting experiments with cathode rays in vacuum tubes. He observed how the rays were attracted to a positively charged plate, leading him to conclude that the particles in the rays carried a negative charge, which he named electrons.
J.J. Thomson experimented with cathode rays in a vacuum tube, which led to the discovery of the electron in 1897. By measuring the charge-to-mass ratio of electrons, he determined that they were a fundamental particle and were present in all atoms.
The scientist credited with the discovery of the cathode ray is J.J. Thomson. Thomson conducted experiments with cathode rays in the late 19th century and discovered the electron, which revolutionized our understanding of atomic structure.
J.J. Thomson used a cathode ray tube to discover electrons. By passing an electric current through the tube, he observed the deflection of a beam of electrons, which led to his conclusion about the existence of electrons.
because Thomson saw the ray move from the cathode to the anode so the particles have negatively charge
The deflection of cathodic rays was the source of inspiration for Thomson.
J. J. ThomsonJ. J. Thomson did the cathode ray experiment where he discovered the existence of electrons.
The discovery of electrons by J.J. Thomson provided evidence for the existence of positively charged particles in the atom because atoms were found to be electrically neutral overall. Thomson's experiments with cathode rays showed that electrons carried a negative charge, leading to the conclusion that there must be positively charged particles in the atom to balance the negative charge of the electrons.
J J Thomson
J.J. Thomson used cathode ray tubes to prove the existence of electrons.
Thomson observed that a cathode ray bent when in the presence of a magnetic field. After the cathode ray bent the opposite way when the opposite pole of the magnet was placed next to it, Thomson concluded that the cathode ray had a negative charge.
its negatively charged particles of matter,Thomson knew that opposites attract but these the positive charged anode,so he reasoned that the paticles must be negatively charged! : )! Wooooo! Go J.J Thomson
A cathode is negative. It attracts cations, which are positively charged.
It was the investigator J. J. Thomson who did experiments with an early cathode ray tube. You'll find a link below.
J. J. Thomson experimented with cathode rays and discovered the electron, leading to the development of the plum pudding model of the atom.