CBSE Class 9 Answered
who discovered the cathode and anode rays??and what was the drawback to discover it..
Asked by ujjwalviky2003 | 06 Nov, 2017, 09:40: PM
Expert Answer
Discovery of Cathode rays
Cathode rays are also called as electron beam. They were first obsreved in 1869 by John Wilhelm Hittorf, a German Physicist and were named by Eugen Goldstein as Kathodenstrahlen or cathode rays, in 1876.
In 1897 J.J. Thomson showed that cathode rays were composed of previously unknown negatively charged particles which were later named as electrons.
Discovery of Anode rays
Anode rays are also called as positive rays or canal rays. They were first observed in 1886, in Crooks tubes during experiment by Eugen Goldstein. Further developments were made by Wilhelm Wein and J.J. Thomson.
Answered by Varsha | 07 Nov, 2017, 10:19: AM
Application Videos
-
Mole concept
This video deals with solved problem based on the mole concept. -
Mole concept
This video deals with solved problem based on the mole concept. -
Mole concept
This video deals with solved problem based on the mole concept and Avogadro... -
Mole concept
This video deals with solved problem based on the mole concept and Avogadro... -
Mole concept_3
This video explains how to write the molecular formulae of the compounds.
Concept Videos
-
Mole Concept - Part 1
This video explains formula unit mass and mole concept. -
Mole Concept - Part 2
This video explains the problems based on mole concepts. -
Atoms and Molecules - Exam Decoded - 4
This video contains questions on mole concept.
CBSE 9 - Chemistry
Asked by gauravsingh36428 | 14 Mar, 2022, 07:44: PM
ANSWERED BY EXPERTCBSE 9 - Chemistry
Asked by krishnaahlawat062 | 27 May, 2021, 09:01: PM
ANSWERED BY EXPERTCBSE 9 - Chemistry
Asked by kinshukgoel | 12 Sep, 2020, 01:26: PM
ANSWERED BY EXPERTCBSE 9 - Chemistry
Asked by saraswatiupadhaya111 | 26 Aug, 2020, 08:54: AM
ANSWERED BY EXPERTCBSE 9 - Chemistry
Asked by sonydatta5 | 24 Aug, 2020, 10:18: AM
ANSWERED BY EXPERTCBSE 9 - Chemistry
Asked by Minajoshi62 | 02 Feb, 2020, 09:01: PM
ANSWERED BY EXPERTCBSE 9 - Chemistry
Asked by tarunvignesh2005 | 12 Jan, 2020, 05:46: PM
ANSWERED BY EXPERTCBSE 9 - Chemistry
Asked by Virenpareek3 | 23 Nov, 2019, 04:13: PM
ANSWERED BY EXPERTCBSE 9 - Chemistry
Asked by fathimafero | 11 Sep, 2019, 02:00: PM
ANSWERED BY EXPERTCBSE 9 - Chemistry
Asked by abhishekverma0300 | 27 Aug, 2019, 12:41: AM
ANSWERED BY EXPERT
