(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

consider a blackbody at t=7000 what is the power emitted through a hole 1m between[itex]\lambda[/itex]= 4000 and 4001 angstrom

2. Relevant equations

P([itex]\lambda[/itex]) d[itex]\lambda[/itex]=A(2[itex]\pi[/itex]hc^{2}/[itex]\lambda[/itex]^{5}(......)d[itex]\lambda[/itex]

3. The attempt at a solution

my question is the math, I thought u had to make a integral on both sides and have it go from 4000 to 4001, but the solution does not do this. they just plug in 4000 for [itex]\lambda[/itex] and for d[itex]\lambda[/itex] they have 10^{-10}Is both ways correct? I dont remember what i got when i did the integral

thanks

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# Find the power emitted (quantium mech)

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