EPTAsk and answer stupid questions here! - Page 706
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Simberto
Germany11824 Posts
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Simberto
Germany11824 Posts
I am willing to spend a few bucks on a game, if it is good. Stuff i don't want to deal with: Ads in game. Exploitative microtransactions. Whatever else similar horrible bullshit there now is in mobile gaming. | ||
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Sbrubbles
Brazil5776 Posts
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KwarK
United States43966 Posts
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Dark_Chill
Canada3353 Posts
The classics should also be considered: Minesweeper, Sudoku, etc | ||
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Navane
Netherlands2751 Posts
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Acrofales
Spain18282 Posts
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GreenHorizons
United States23930 Posts
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JimmiC
Canada22817 Posts
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Ghostcom
Denmark4783 Posts
EDIT: Disclaimer: This is not really close to my specialty at all. | ||
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farvacola
United States18857 Posts
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JimmiC
Canada22817 Posts
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kidcrash
United States623 Posts
edit: let's say I'm 6 feet tall | ||
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FiWiFaKi
Canada9859 Posts
d^2 = h^2 + 2*R*h where: d = distance to horizon R = radius of earth h = height to your eyes Now you'll take that distance, and calculate the area... You can treat the earth as flat at such small surface area calculations and induce almost no error, so: Then just take horizontal field of view over the whole circle, so for humans roughly 210 degrees / 360 degrees. A = pi*d^2*(human horizontal field of view)/360 Now that we're talking about a practically flat piece of land, you're looking more of less horizontally (a couple meters down over the distance of several km). Your eyes have a field of vision roughly 70 degrees down compared to what you're looking at, and since you're looking horizontal, technically you can't see a very small distance near you, tan(20)*h, which is negligible.... Therefore the area you can see is: 39.659 million m^2 or 39.659 square km or 426.89 million ft^2 (I used 1.7m for the height to a 6ft person eyes) The distance straight forward is 4652 meters. The distance spanning the furthest point left to right will be twice that (9304m), as you're seeing a a fraction of a sphere, and since the 4652 meters is the radius, and you can see more than 180 degrees of the circle, the furthest distance between points would be the diameter 2*r = d. | ||
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xM(Z
Romania5299 Posts
check if it's based on specific foods then find their common denominator and eliminate it from your diet(the pain is from the liver imo, unless ulcers). it looks like some intolerance to me.(see FOODMAPs, especially sugars - fructans/maybe fructose) | ||
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Emnjay808
United States10665 Posts
On September 30 2018 13:18 FiWiFaKi wrote: If you assume the earth to be a perfect sphere, then the distance to the horizon would be the same in every direction, which is you can derive geometrically as: d^2 = h^2 + 2*R*h where: d = distance to horizon R = radius of earth h = height to your eyes Now you'll take that distance, and calculate the area... You can treat the earth as flat at such small surface area calculations and induce almost no error, so: Then just take horizontal field of view over the whole circle, so for humans roughly 210 degrees / 360 degrees. A = pi*d^2*(human horizontal field of view)/360 Now that we're talking about a practically flat piece of land, you're looking more of less horizontally (a couple meters down over the distance of several km). Your eyes have a field of vision roughly 70 degrees down compared to what you're looking at, and since you're looking horizontal, technically you can't see a very small distance near you, tan(20)*h, which is negligible.... Therefore the area you can see is: 39.659 million m^2 or 39.659 square km or 426.89 million ft^2 (I used 1.7m for the height to a 6ft person eyes) The distance straight forward is 4652 meters. The distance spanning the furthest point left to right will be twice that (9304km), as you're seeing a a fraction of a sphere, and since the 4652 meters is the radius, and you can see more than 180 degrees of the circle, the furthest distance between points would be the diameter 2*r = d. This is the shit I come here for. FUCK YEA | ||
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Simberto
Germany11824 Posts
d^2 + R^2 = (R+h)^2 ---> d=Sqrt((R+h)^2-R^2) Edit: Sorry, that is the exact same equation as above. Nonetheless, i guess this might explain it a bit further where it comes from. Pythagoras, based on a right-angled triangle with the right angle at the furthest point where your gaze meets the ground. ![[image loading]](https://i.imgur.com/gUdvnT6.jpg) | ||
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Acrofales
Spain18282 Posts
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Simberto
Germany11824 Posts
I think it is important to not only know the answer, but also how you can derive that answer from base principles. Otherwise, you never reach the point where you can actually answer new questions yourself. | ||
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kidcrash
United States623 Posts
On September 30 2018 19:44 Simberto wrote: Indeed, as my edit describes, it doesn't add anything, but it shows where the equation is based on. Which has value on its own. Just stating an equation doesn't help people understand what you are doing, i think from a teaching point of view what i did was still valuable, even if it was based on me not figuring out quickly enough that the two equations are the same because i just woke up. I think it is important to not only know the answer, but also how you can derive that answer from base principles. Otherwise, you never reach the point where you can actually answer new questions yourself. Thanks both posts were very helpful with answering my question! | ||
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