Does your bathroom mirror show you older or younger than you actually are ? Compute an order of magnitude estimate for the age difference

The image formed of an object placed in front of a flat mirror is as far behind the mirror as the object is in front of it. A flat mirror produces an image that has an apparent front-back reversal

The image of the bathroom mirror shows you younger than you actually are

Let the distance between the observer and the mirror be 15 cm

s=15 cm = 0.15 m

the reflected image seen by the person is from the light that traveled from the person to the mirror and back. The time interval is calculated using the following formula:

t= (2s)/(c)

c= speed of light = 3.00 * 10^8

the reflected light gives the image of what the person had been earlier

t= (2 * 0.15)/(3.00 * 10^8) = 10^-9 seconds

Therefore, the person appeared as 10^-9 seconds younger than he actually is

No vote yet

1 vote

×

Problem Loading...

Note Loading...

Set Loading...

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

Sort by:

TopNewestWow! Never thought that...amazing

Log in to reply

wow..never thought of that thing

Log in to reply