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So that the electrons are not scattered by collisions with air molecules.
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The behavior of cathode rays in a glass tube containing gas at low pressure led scientists to conclude that the rays were composed of?
Were composed of no charge particles .
What is quenching in Geiger muller tube?
A small amount of vapours of a substance having low ionization potential, called as quenching gas, eg alcohol vapours, is added to gm tube, which discharges at cathode before the principle gas +ve ions which discharges at cathode in about 10^-4 seconds. So the quenching gas neutralizes itself and also the tube....
Why discharge tube appears dark at very low pressure?
Not enough gas to support ionization.
How does gas thermometer functioning?
A gas thermometer measures temperature by the variation in volume or pressure of a gas.One common apparatus is a constant volume thermometer. It consists of a bulb connected by a capillary tube to a manometer. The bulb is filled with a gas such that the volume of the gas in the bulb remains constant. The volume is related to temperature by k, known as Charles's Law . The pressure of the gas in the bulb can be obtained by measuring the level difference in the two arms of the manometer. Gas thermometers are often used to calibrate other thermometers.
Why does a balloon filled with helium gas rise to a particular height and doesn't rise further?
That is because the Pressure inside the balloon caused by the filled pressure reached equilibrium at this point based on the height so can rise no longer.
What A low pressure gas filled glass tube which generates a glowing beam between cathode and anode?
Cathode ray.
How would the electrons produced in a cathode ray tube filled with neon gas compare with the electrons produced in a cathode ray tube filled with chlorine gas?
JJ Thompson passed an electric current through a gas at low pressure from the negative terminal to the positive terminal then decided that the ration is always the same regardless the gas used.
How does cathode rays ionise the gas which is filled inside a distarge tube?
i did not get arelavent answer
Stream of electrons produced at the negative electrode of a tube containing a gas at a low pressure?
cathode ray
How would the electrons produced in a cathode ray filled with neon gas compare with the electrons produced in a cathode ray filled with chlorine gas?
the results are the same regardless of the gas
A cathode ray produced in a gas-filled tube is deflected by a magnetic field A wire carrying an electric current can be pulled by a magnetic field A cathode ray is deflected away from a negatively?
They are negatively charged
What is the function of tube light?
The function of tube light is to give energy in the form of heat and light. It enables us to see objects in the dark. Do you want to know how light tube glows? When we supply the power to the tube lite, the cathode of the tube rod gets heated up. The inner surface of the tube rod is covered with phosphuorent * fluorescent) and is filled with gas under less pressure. Gas can be Neon, Krypton or Argon. When the tungsten heats up it also excites the electrons of the fluorescent. During excitation and de-excitation, energy in the form of light is released. The wavelength of that light lies in the visible range of our eyes. Since air under less pressure becomes conducting, it conducts electrons from one side to the other, thus creating an anode and a cathode.
Why does a cathode ray tube have low pressure inside?
Low pressure inside a cathode ray tube? How about nopressure inside the tube! In a cathode ray tube, the "cathode ray" is an electron beam that is used to paint a "picture" on the phosphor coating on the inside of the tube. (We look at the "picture" from the other side of the glass on which the coating is laid down - the outside.) An electron is a lightweight little dude. It weighs about 1/1836th as much as a single proton, so anything, any gas atoms that are in the flight path of an electron will cause it to scatter. That means we need to pump all the air out of the inside of the tube. After we remove all we can, we fire a "getter" (a chemical coated onto a small area inside the tube) which will bind any remaining gas molecules left inside the tube to complete the evacuation process. No more pesky atoms to get in the path of the electron beam and scatter it all over the place.
What sensors does a geiger counter have?
One Geiger-Muller tube. This is a low pressure gas filled cold cathode electron tube operated by avalanche ionization. The cathode is a thin walled metal cylinder, the anode is a stiff metal wire running down the central axis of the cylinder, if the tube is to be sensitive to alpha radiation the far end is capped with a single thickness of mica, the near end of the tube is capped and a 2 wire cable runs from there to the counter. When a particle of ionizing radiation enters the tube it triggers an ionization avalanche between the cathode and anode with a current gain around 10,000 (10,000 negative ions hitting the anode for each ionizing particle entering the tube with an equal number positive ions hitting the cathode). The counter then counts these pulses of current to estimate the level of radioactivity.
The behavior of cathode rays in a glass tube containing gas at low pressure led scientists to conclude that the rays were composed of?
Were composed of no charge particles .
What is quenching in Geiger muller tube?
A small amount of vapours of a substance having low ionization potential, called as quenching gas, eg alcohol vapours, is added to gm tube, which discharges at cathode before the principle gas +ve ions which discharges at cathode in about 10^-4 seconds. So the quenching gas neutralizes itself and also the tube....
How do you make a simple hydraulic?
Take a tube, put a piston in it, seal off both ends of the tube, and use a liquid, or gas to put pressure in and remove pressure from the tube. As the fluid or gas goes in the tube, the pressure pushes the piston out. As the pressure is released, the piston can recede.
