this post was submitted on 04 Jan 2025
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Science Memes

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submitted 1 week ago by [email protected] to c/[email protected]
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[–] Sam_Bass 34 points 1 week ago* (last edited 1 week ago) (31 children)

Everything in the universe reflects light. Except black holes. Only things you cannot see do not reflect light.

[–] [email protected] 4 points 1 week ago (10 children)

except you can still arguably see things that don't reflect light, if you were anywhere near a black hole (let's imagine it has no accretion disk and thus isn't surrounded by a bunch of light) it'd be pretty obvious what with the bending of light and how it's a disk of pure blackness against the backdrop of stars.

[–] [email protected] 5 points 1 week ago (9 children)

And you know, light sources. They don't need to reflect any light.

[–] CrazyLikeGollum 8 points 1 week ago (1 children)

But they still do. It might just be overpowered by the emitted light.

[–] [email protected] 0 points 1 week ago* (last edited 1 week ago) (3 children)

Does a candle really reflect light?

[–] [email protected] 6 points 1 week ago (1 children)

Candle fire does reflect light, that's why it has a shadow.

[–] CrazyLikeGollum 2 points 1 week ago (1 children)

Yes. The flame is a cloud of gas and particulate heated to the point that it glows. It will reflect light. Just not a lot, and it's also emitting enough light to overpower any reflected light in most conditions.

And of course the candle itself reflects light.

[–] [email protected] 1 points 1 week ago

It doesn't need to reflect any light though.

[–] [email protected] 1 points 1 week ago (1 children)

Yes, paraphene candle reflects light, unless you won't know that it's white

[–] [email protected] 2 points 1 week ago

I obviously mean the flame.

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