Describe positive rays, Physics

Assignment Help:

Positive rays are sometimes called as the canal waves. These were found by Goldstein. If the cathode of a discharged tube has holes in it and the pressure of the gas is around 10-3 mm of Hg then faint luminous glow comes out from every hole on the backside of the cathode. It is supposed positive pulses which are rolling out from the holes.     

785_22.png

 

Origin of positive rays: When potential dissimilarity is applied across the electrodes, electrons are gone from the cathode. As they move in the direction of anode, they gain power. These energetic electrons when hit with the atoms of the gas in the discharge tube, they ionize the atoms. The positive ions so formed at several places between cathode and anode travel towards the cathode. As during their motion, the positive ions when arrives the cathode, some pass by the holes in the cathode. These branches are the positive pulses.

 

 


Related Discussions:- Describe positive rays

What torque is required by the bolt, A force of 25 N is applied vertically ...

A force of 25 N is applied vertically at the end of a wrench handle that is 45 cm long to tighten a bolt in the clockwise direction. What torque is required by the bolt to keep the

Mica capacitors, Mica is a mineral that can be readily sliced into thin chi...

Mica is a mineral that can be readily sliced into thin chips, makes an excellent dielectric and is used in capacitance incorporated in circuits requiring stable and accurate capaci

Ferrits, Detail information about ferrits also current research on ferrits

Detail information about ferrits also current research on ferrits

Motion in one dimension, is motion of a ball on a smooth surface an example...

is motion of a ball on a smooth surface an example of uniform velocity? is motion of a ball on a rough surface an example of variable velocity? is a car moving on a straight path

What are sheathed fibers, What are sheathed fibers? The optics, which h...

What are sheathed fibers? The optics, which has an external cladding whether transparent or opaque, affords a mechanical protection to the optics.

Expermient of a sensitive beam balance, A sensitive beam balance The ma...

A sensitive beam balance The materials required for this balance contain a clothes peg, a knitting needle about 12 in. long, two pins or needles and a support like as a milk bo

Determine the phase angle between voltage and current, A coil havingof a re...

A coil havingof a resistance of 100 and an inductance of 200mH. If an alternating voltage, v, givenby v=200sin500t volts is applied across the coil, measure (a) The circuit

What is sclera, Sclera: It is an outer most, thick, impermeable to ligh...

Sclera: It is an outer most, thick, impermeable to light. It is more convex and it's front part is transparent is known as Cornea.

Uv radiations and x - rays are, UV radiations and  X - rays are: UV r...

UV radiations and  X - rays are: UV radiations are produced by the high energy transitions of the electrons in atoms. UV radiations have wavelengths ranging from 0.4 m m to 1n

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd