## Excel in math and science

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Master advanced concepts through explanations,

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Easy Math Editor

`*italics*`

or`_italics_`

italics`**bold**`

or`__bold__`

boldNote: you must add a full line of space before and after lists for them to show up correctlyparagraph 1

paragraph 2

`[example link](https://brilliant.org)`

`> This is a quote`

Remember to wrap math in \( ... \) or \[ ... \] to ensure proper formatting.`2 \times 3`

`2^{34}`

`a_{i-1}`

`\frac{2}{3}`

`\sqrt{2}`

`\sum_{i=1}^3`

`\sin \theta`

`\boxed{123}`

## Comments

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TopNewestBonus questionwhat changes we will have if we have an electron revolving in nth orbit around a positron!!Log in to reply

Comment deleted Jun 01, 2015

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

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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

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@Rohit Gupta

Thank you for replying. These replies helped me to rectify my misconceptions.Log in to reply

@Manish Dash

Your WelcomeLog in to reply