/u/hamsterdave's posts in /r/askscience

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Have we observed objects orbiting around the sun in the 'wrong direction'?

2159 upvotes

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How does tropospheric ducting of VHF and UHF radio signals work?

39 upvotes

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Does the refractive index of a gas change with level of ionization?

23 upvotes

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What is causing the asymmetrical ionospheric attenuation in this image?

12 upvotes

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Observed some unusual clouds this afternoon, and I'd like to know more about them.

12 upvotes

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Why do we automatically associate a narrow depth of field with very small objects?

10 upvotes

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Diluted red wine changes color at a certain concentration. What's happening here?

8 upvotes

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What, if any, advantages do beech and oak trees gain by holding on to their dead leaves months longer than other deciduous species?

7 upvotes

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In an RF signal, does bandwidth always increase when data rate increases, if all other factors are stable?

5 upvotes

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We say that gravitational acceleration here on earth is 9.81m/s^2. Is this a constant, or is it influenced by the mass of the falling object?

2 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Have we observed objects orbiting around the sun in the 'wrong direction'?	2159
How does tropospheric ducting of VHF and UHF radio signals work?	39
Does the refractive index of a gas change with level of ionization?	23
What is causing the asymmetrical ionospheric attenuation in this image?	12
Observed some unusual clouds this afternoon, and I'd like to know more about them.	12
Why do we automatically associate a narrow depth of field with very small objects?	10
Diluted red wine changes color at a certain concentration. What's happening here?	8
What, if any, advantages do beech and oak trees gain by holding on to their dead leaves months longer than other deciduous species?	7
In an RF signal, does bandwidth always increase when data rate increases, if all other factors are stable?	5
We say that gravitational acceleration here on earth is 9.81m/s^2. Is this a constant, or is it influenced by the mass of the falling object?	2