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# Thought Of the Day_6_Emission lines..!!

Note by Rohit Gupta
2 years, 9 months ago

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Bonus question what changes we will have if we have an electron revolving in nth orbit around a positron!!

- 2 years, 9 months ago

Comment deleted Jun 01, 2015

Nope they are slightly different!! Not much different but yeah slightly..!! so now think why??

- 2 years, 9 months ago

because we neglect the motion (and hence the mass) of nucleus in our analsys, in reality the electron is not revolving around the nucleus but rather both are revolving about the common centre of mass

- 2 years, 9 months ago

Correct!! Kudos..!! While dealing with Bohrs model we assume the nucleus to be of infinite mass.!! but practically it is not..!!

- 2 years, 9 months ago

Thank you for replying. These replies helped me to rectify my misconceptions. @Rohit Gupta

- 2 years, 9 months ago