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How much lux does the Sun emit? - Physics Stack Exchange
When you look 'at the world' (i.e. to the horizon) on a clear day, unlesss the sun is at a very low angle, the surface of your eye is not illuminated directly by the sun, only reflected sunlight from …
How is distance between sun and earth calculated?
Apr 27, 2015 · Another way of calculating the earth - sun distance is to look at the centrifugal and the gravitational force. This solution assumes that one already knows the mass of the sun, but …
What would happen if Jupiter collided with the Sun?
Apr 27, 2018 · However, the Sun will accrete $\sim 10^{42}\ \mathrm{kg\ m^2\ s^{-1}}$ of angular momentum, which is comparable to its current angular momentum. The accretion of Jupiter in …
What is the simplest way to prove that Earth orbits the Sun?
Apr 17, 2015 · If we assume the Sun orbits the Earth, the math says that the Sun should be much less massive than the Earth. If we assume the Earth orbits the Sun, the opposite is true. Either …
How hot can metal get in sunlight? - Physics Stack Exchange
May 31, 2015 · If the building is located in Hammerfest, Norway the metal might get warm to the touch. If it's on the sun-facing side in Las Vegas you may find it gets hot enough to cause …
Equation of Earth's Orbit around Sun (ellipse)
The sun is one of the two foci. For the Earth, the perihelion is 147.1 million km and the aphelion is 152.1 million km. These two distances help identify the location of the sun on the major axis of …
thermodynamics - Black and white matters. But why and how?
Jul 3, 2014 · The visible has about half of the energy coming from the sun on the surface, as seen in the link. So a metal door in the sun will transfer the heat of the visible spectrum to the …
Review: Sun Spa - Lulu - Enthusiastic service | AMP Reviews
Nov 26, 2021 · Title: Review: Sun Spa - Lulu - Enthusiastic service Date: May 3, 2025 Phone: 917-559-7655 City: Scotch Plains State: NJ Location: Park Ave, rear entrance House Fee & …
Why does a rainbow only form with a 42° angle? [duplicate]
Aug 16, 2019 · Light rays enter a raindrop from one direction (typically a straight line from the sun), reflect off the back of the raindrop, and fan out as they leave the raindrop. The light …
Why is it easier to get sunburnt in the water? [duplicate]
Jun 23, 2016 · Reflection from still water can be high at grazing incidence, near sunrise or sunset, but the sunlight is significantly less intense at these times. You are far more likely to be in the …