## HW 1.7 (speed of light) clarification

$c=\lambda v$

Celeste Martinez 1K
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### HW 1.7 (speed of light) clarification

In lecture, I know that Dr. Lavelle mentioned that the speed of light was 3.0 x 10^8 but on the solutions manual, it says 2.998 x 10^8
Does it matter which one we use? Would the latter one be more accurate or preferable?

annie_finneran_1K
Posts: 37
Joined: Fri Apr 06, 2018 11:02 am

### Re: HW 1.7 (speed of light) clarification

I think he said to use whatever value the question gives, so on tests he will probably tell us which value to use.

nelquosey
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Joined: Fri Apr 06, 2018 11:02 am

### Re: HW 1.7 (speed of light) clarification

I believe that the speed of light with the exact number of sig-digs preferred by Dr Lavelle is on the formula sheet given to us in tests :)

Bijal Luhar
Posts: 33
Joined: Fri Apr 06, 2018 11:03 am

### Re: HW 1.7 (speed of light) clarification

Always use the most precise information. Dr. Lavelle stated that 3.0 is an rounded figure, the 2.988 will give you a more precise and accurate answers!

Moris 1H
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Joined: Fri Apr 06, 2018 11:01 am

### Re: HW 1.7 (speed of light) clarification

The value they use in the textbook I believe is 3.00 x 10^8 but the value difference is so small I don't think it should affect your answer that much.