There’s a lot I can send you but I think a good starting point is the earth curve calculator
You can go outside and prove this one for yourself without any equipment necessary, but if you have binoculars or a telescope it would amplify the proof for you
If you live near a large body of water that would be best, as viewing over land could just be flat…
Clear day you should be able to easily see far enough to give you the proof you need
Essentially you want to go to a coastline and then spot the furthest landmark/object you can see
The using google maps on a pc, right click and measure distance to get an accurate measurement and then plug it into the earth curve calculator
It shows the formula for calculating the curve so you can verify the math yourself
What curve at what distance? I haven’t heard of this
The horizon rises to meet our eye level no matter the altitude
Even if the earth were ten times larger, we should still have to peer even slightly down to see the horizon, yet, it rises to meet our eye level at any altitude
I’m interested to hear about what you’re referring to, a confirmed curve seen at a longer distance?
There’s a lot I can send you but I think a good starting point is the earth curve calculator
You can go outside and prove this one for yourself without any equipment necessary, but if you have binoculars or a telescope it would amplify the proof for you
If you live near a large body of water that would be best, as viewing over land could just be flat…
Clear day you should be able to easily see far enough to give you the proof you need
Essentially you want to go to a coastline and then spot the furthest landmark/object you can see
The using google maps on a pc, right click and measure distance to get an accurate measurement and then plug it into the earth curve calculator
It shows the formula for calculating the curve so you can verify the math yourself
https://earthcurvature.com/
When you’re looking at a distant object from even 20kms away, very easy to do this with the naked eye
You will be able to see the entire landmark including the shoreline leading up to it
Even at 20kms we should have almost 100ft of drop
It’s exponential so when you’re looking at something 50kms away…
We have real world examples all over the world that are significantly further still
Objects that should be blocked from view by an entire mile of earth, yet, completely in view
What curve at what distance? I haven’t heard of this
The horizon rises to meet our eye level no matter the altitude
Even if the earth were ten times larger, we should still have to peer even slightly down to see the horizon, yet, it rises to meet our eye level at any altitude
I’m interested to hear about what you’re referring to, a confirmed curve seen at a longer distance?