The center of our solar system. Questions in regards to sunlight or solar related questions.
Questions tagged [sun]
67 questions
7
votes
1 answer
Is there an instance where the sun sets or rises partly, then return back?
I am reading Longest Sunset from XKCD. At first, I've thought that he mentions these phenomena just for fun, but it turns out to me that it might happens, based on the level of somewhat seriousness that I perceive from his writing. He doesn't talk…
Ooker
- 255
- 1
- 5
6
votes
2 answers
Why can I look directly at the sun during a sunset but not at noon?
Why can I look directly at the sun during a sunset (with a lot less pain and unconfort) but not at noon?
zundi
- 173
- 1
- 1
- 5
4
votes
3 answers
calculate UV index in vertical plane
Due to extensive damage to my face because of an accident, I am currently undergoing skin therapy (laser/IPL/medication), that makes my skin extremely sensitive to UV radiation. So I need to stay out of the sun, at the very least between 11:00 and…
rogerwilco
- 51
- 3
3
votes
1 answer
Difference in sun activity between two towns (Eastern and Western hemispheres)
I grew up in a small town on a sea shore with hot and sunny summers (up to 30-35° C). I remember myself, my friends and relatives being outdoors for 12 hours a day. We never needed sunscreen, and never used it. It was considered, that skin can burn…
Sleepy Hollow
- 131
- 3
2
votes
1 answer
Seeing a varied change in brightness across the landscape during sunrise?
In this video of sunrise at Cadillac Mountain, Maine, the landscape closer to the horizon appears to brighten sooner than the foreground. It makes sense to me, the terrain at the horizon is experiencing the sunrise before the terrain at the water…
Bob516
- 334
- 1
- 7
1
vote
0 answers
The Sun's location in noon and tropic of Cancer/Capricorn
I came across this article and I would like to clarify a few moments:
if you're located north of the Tropic of Cancer, the Sun will always
appear south of the zenith.
Does it mean if I am located north of the Tropic of Cancer and I point a compass…
pacman
- 297
- 1
- 4
1
vote
1 answer
Tropic of Cancer/Capricorn and sun position
Let's consider 3 options for my position on Earth:
North to tropic of Cancer
Between tropic of Cancer and Capricorn
South to tropic of Capricorn
If I take a compass and point it to the Sun, will it match next guess:
North to tropic of Cancer ->…
pacman
- 297
- 1
- 4
1
vote
1 answer
In a picture taken in an unknown location, the sun shines on skyscrapers solely from the right. What direction was the camera facing?
My son reasoned that if the sun is shining on the right sides of the skyscrapers, then east is to the right. Therefore, the camera is facing north.
Therefore my son answered "a) North".
But Scantron marked him wrong. Why? What's wrong with his…
user17042
1
vote
1 answer
In a picture taken in Northern Hemisphere, the sun shines on skyscrapers solely from the right. What direction was the camera facing?
My son answered e), but Scantron marked him wrong. Why? Please show the steps. How should he deduce the answer?
A picture was taken in the Northern Hemisphere (e.g. Canada), featuring two skyscrapers. You can clearly see sunlight coming from the…
user17042
1
vote
1 answer
What exactly does it mean that Japan is the "land of the rising sun"?
Only in later years have I understood anything about how our planet moves around itself and around the Sun, and how it therefore appears to always "rise in the East" and "set in the West", apparently "traveling across the sky" (but it's actually our…
Wynell S.
- 11
- 1
1
vote
1 answer
[How deduce from shadows, the angulation of the Sun that the Sun is 15 degrees over horizon?
At r/rbi, u/A11edge asked
Can anyone determine an hour when the photo was taken?
The author of the photo is suspected of spraying pesticides during daytime (which is illegal because it causes death of thousands of bees).
Location: somewhere in…
user17042
1
vote
0 answers
Understanding the sunshine duration metric
I am trying to create a program that calculates the ideal climate based on a set of inputs and weights. Something similar to 400 cities but based on more climate based options that the user can configure. Some example questions;
What is your ideal…
Iain Watt
- 41
- 2