- #1

- 415

- 0

how does [tex]cm^{-3}[/tex] represents a number of atom

why not just say

"a silicon cristal is doped with 1000000000000000000 atoms of antimon"

- Thread starter nhrock3
- Start date

- #1

- 415

- 0

how does [tex]cm^{-3}[/tex] represents a number of atom

why not just say

"a silicon cristal is doped with 1000000000000000000 atoms of antimon"

- #2

MATLABdude

Science Advisor

- 1,655

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- #3

- 415

- 0

why cubic cm is cm with power of -3

and not power +3

?

cubic is power +3

and not power +3

?

cubic is power +3

- #4

MATLABdude

Science Advisor

- 1,655

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It is! If you know exponents, cm^-3 is the same thing as 1/cm^3. Something *per* cubic cm, as we say.

- #5

- 415

- 0

aaaaahhhhhhhhhhhhhhhh thanks

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