<p>In your calculation, did you use albedo correctly? Remember, <a href="https://glossary.ametsoc.org/wiki/Albedo" rel="nofollow noreferrer">albedo is the ratio of reflected radiation to total radiation</a>, and 1-albedo is the ratio of absorbed radiation to total radiation.</p>
<p>Edit: Make sure you are plugging the numbers in correctly too.</p>

CC BY-SA 4.0
2020-10-22T15:05:33.537Z
2020-10-22T15:05:33.537Z
BarocliniCplusplus
<p><strong>To save the Earth, the surface of the Earth has been covered by silver foil. The foil has a albedo of 0.9. What is the flux density emitted from the surface of the Earth (assume temperature of 50 deg C)?</strong></p>
<p>So I thought I could use Stefan Boltzmann law and just plugg in my values and got 569, but this is not correct. What I'm I missing?</p>

<atmospheric-radiation>
Flux density and albedo
Mathomat55
# Flux density and albedo

(Asked by: username_0 on 2020-10-22)

**To save the Earth, the surface of the Earth has been covered by silver foil. The foil has a albedo of 0.9. What is the flux density emitted from the surface of the Earth (assume temperature of 50 deg C)?**

So I thought I could use Stefan Boltzmann law and just plugg in my values and got 569, but this is not correct. What I'm I missing?

**Tags:** atmospheric-radiation


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## 1 answers

### Answer by username_1 on 2020-10-22. Score: 2

In your calculation, did you use albedo correctly? Remember, [albedo is the ratio of reflected radiation to total radiation](https://glossary.ametsoc.org/wiki/Albedo), and 1-albedo is the ratio of absorbed radiation to total radiation.

Edit: Make sure you are plugging the numbers in correctly too.


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