this post was submitted on 28 Aug 2024
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Science Memes

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That's a big burger (files.catbox.moe)
submitted 2 months ago by Gork@lemm.ee to c/science_memes@mander.xyz
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[–] cordlesslamp@lemmy.today 3 points 2 months ago (1 children)

how can I calculate the distance at which the sun filled my entire field of view?

[–] jjagaimo@lemmy.ca 5 points 2 months ago (2 children)

Theta = 1/2 human fov

r = radius of sun

[–] cordlesslamp@lemmy.today 3 points 2 months ago (1 children)

so simple (and not at all). Thanks.

[–] Tlaloc_Temporal@lemmy.ca 1 points 2 months ago (1 children)

d = r/sinΘ

Human FoV is about 210° with both eyes. Thus Θ is 105°.

The radius of the sun is 695,508 km.

Thus, d is 695,508/sin(105) → 720,043 km

720,043 - 695,508 = 24535 km away from the surface of the sun.

However, because the FoV is greater than 180°, this is actually below the surface of the sun, and any distance below the surface is enough to fill your vision.

To completely fill your field of view with the Sun, you'll need to take a Parker Bath and dip into the sun.

[–] cordlesslamp@lemmy.today 1 points 2 months ago (1 children)

I think 210° is when you moved your eyes to the limit at both sides. So let's say it's FOV when your eyes look straight forward and don't move.

[–] jjagaimo@lemmy.ca 2 points 2 months ago* (last edited 2 months ago)

The 210 is straight ahead horizontal FOV, i just didn't realize it was greater than 180°, which means it can technicaly never completely fill your peripheral vision. Your binocular vision with both eyes is around 115°. Vertical fov is only 135° though.