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The electrons emitted from cathode hit the glass of the tube, causing it to fluoresce.

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What did William Crookes discover?

Sir William Crookes was a British chemist who contributed to the knowledge of chemistry. One thing he did was discover an element that had a bright green emission line in its spectrum. He named the previously unknown element thallium.


What do we call the experimental apparatus that William crookes used in his experiments?

William Crookes used a device called a Crookes tube in his experiments. This was a sealed glass tube that contained rarefied gas and electrodes for producing cathode rays. The Crookes tube was instrumental in the discovery of cathode rays and contributed to the development of early atomic theory.


What did William Crookes use to test John Dalton's theory?

William Crookes used a cathode ray tube to test John Dalton's theory of the existence of atoms. By observing the behavior of cathode rays in the tube, Crookes provided evidence supporting the idea of discrete, indivisible particles.


When was the crookes tube invented?

The Crookes tube was invented in 1875 by British chemist and physicist Sir William Crookes. It was one of the early experimental vacuum tubes used for scientific research in the field of cathode ray experiments.


What year did William Crookes test John Dalton's theory with a cathode ray tube?

1870


What is a crookes tube?

A Crookes tube is a type of cathode ray tube that was used for scientific experiments and demonstrations in the late 19th century. It consists of a partially evacuated glass tube with electrodes that generate a beam of electrons. This device played a pivotal role in the discovery of cathode rays and led to the development of modern television and computer displays.


Who discovered cathode ray?

The inventor of the cathode ray tube was Kalman Tihanyi. Tihanyi was a Hungarian physicist and inventor, born in Slovakia in 1897.


What do cathode produce on the walls of the discharge tube?

greenish glow or fluorescence


How did William Crookes determine the nature of the beam in cathode ray tube?

In his investigations of the conduction of electricity in low pressure gases, William Crookes discovered that as the pressure was lowered, the negative electrode (cathode) appeared to emit rays (the so-called cathode rays, now known to be a stream of free electrons, and used in cathode ray display devices).


Who invented the cathode ray tube in the 1970s?

William Crookes invented cathode ray tubes.The earliest version of the CRT was invented by the German physicist Ferdinand Braun in 1897.


What did scientist conclude from the fact that when an electrical current passed through a glass tube caused the surface of the tube directly across from the cathode to glow?

Scientists concluded that the glow observed on the surface of the tube opposite the cathode was due to the presence of rays emitted from the cathode. These rays were later identified as electrons, leading to the discovery of cathode rays and the development of cathode ray tubes. This phenomenon provided important insights into the behavior of charged particles in the presence of an electric field.


When did William crookes invent the crookes tube?

around 1869-1875