## Clarification on unit conversions

Tiffany Chen 1A
Posts: 36
Joined: Fri Apr 06, 2018 11:02 am
Been upvoted: 1 time

### Clarification on unit conversions

To convert from meters to nanometers, we just multiply the number of meters by 10^9 right? And then to convert meters to picometers, we just multiply by 10^12?

Marisol Sanchez - 1E
Posts: 38
Joined: Fri Apr 06, 2018 11:05 am

### Re: Clarification on unit conversions

Yes, but just make sure that the initial unit is meters because if it is something different like say centimeters then the conversion would be off. You could also technically just move the decimal over 9 times or 12 times to get the correct conversion value but that seems like more of a hassle compared to just multiplying them.

Nina_A_Section1E
Posts: 31
Joined: Fri Apr 06, 2018 11:01 am
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### Re: Clarification on unit conversions

Yes! That's also the same thing is dividing by 10^-9 for nm or 10^-12 for picometers, if that is easier to visualize for dimensional analysis

Mhun-Jeong Isaac Lee 1B
Posts: 54
Joined: Fri Sep 28, 2018 12:17 am

### Re: Clarification on unit conversions

I would just like to underscore the importance of visualization as the previous response has stated. Before converting, I find it very helpful to compare the size of both units. For example, if I were to convert meters to kilometers, I would first realize that a kilometer is a larger unit than a meter. That is to say, many meters fit into a kilometer, specifically 1000 meters. As a result, when you are converting meters to kilometers, it would make sense to have a decimal value for kilometers. 1 m converts to .001 km.

Ester Garcia 1F
Posts: 29
Joined: Fri Sep 28, 2018 12:17 am

### Re: Clarification on unit conversions

Right! A meter can fit a lot more nanometers (10^9 nanometers for every meter) so it would make sense that the number of nanometers is greater, therefore multiplying the number of meters (by 10^9) to get nanometers makes sense.