What causes refraction?

I am

light passing through mediums with different densities

What was the density of mile 50 in the 2014 world record photo

So its only the density of the medium. We can discount temperature inversion i guess

What is the density of the air where im at right now

If i travel 1 mile horizontally then what would the density be?

the density of what?

sorry one of us here must be having a stroke because from my perspective your just chatting out of your arse right now

oh never mind I see what your trying to say now

so if you travel 1 mile horizontally then the air density is going to decrease

why decrease?

Morning all.

👋🏻 hey

because if your travelling in a straight line on a spherical earth your going to decrease in altitude

Who said it was a sphere?

oh dedar

😂

K.

I dont know what else to say light curves around the earth because of refraction due to decrease in density with altitude

No...

U mean like this?

How does light curve around the Earth?

I am talking about atmospheric refraction not gravitational but yeah it would look something like that

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it refracts around the earth

I made an explanation let me copy and paste it for you

when you point a laser directly forward the laser starts to gain altitude and so the air around it is less dense since light bends away from the normal which would be 90 degrees directly into the sky it will follow the earths curve

https://c.tadst.com/gfx/750x500/atmospheric-refraction.png?1

There is no curve though.

Curve of space time

I am saying that in a globe earth the curvature is hidden by atmospheric refraction

and so you have to significantly increase the range of your observation to actually see objects disappear below the horizon

and spacetime curvature is undeniably real which proves that space is real

because if you look around the sun during a solar eclipse you can see that the apparent position of the stars has changed in exact accordance to general relativity

and if you look at stars with exoplanets you can see them wobble and that wobble is caused by the gravity of those exoplanets effecting the parent star

and in case you want to that those exoplanets are not real and those stars are just wobbling for whatever reason sometimes you can see them eclipse around those stars which is detectable by observing how those stars dim when they obscure some of our view of those stars

u want a ban?

who

Nio obvs

yeah the more time I spend here the more increasingly hard I find it to believe that these people actually believe in this