Search results
Feb 15, 2011 · 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 thats a different problem ;-).
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 burns. A definitive answer is not possible. If people can touch it easily the temperature is a concern. If it's out of reach, don't worry about it. The iron isn't going to melt.
The continuous spectrum of the visible photosphere of the Sun is attributable to the radiative equilibrium of the $\mathrm{H}^{-}$ ion. This has been recognised for at least 80 years ( Wildt 1939 ). This ion forms by the attachment of a free electron (with a continuous spectrum of energies) to a hydrogen atom, emitting a continuous spectrum of photons in the process.
Both articles provide rates of change of the Earth-Sun distance (specifically, the Earth-Sun semimajor axis length ) and of the 1976 definition of the astronomical unit as. − −. 1.2 3.2 a u ˙ = 1.2 ± 3.2. The reason for the nearly three order of magnitude difference between these two figures is that the astronomical unit is not the ...
Feb 22, 2017 · The UV light is not good for skin (burns the skin) and therefore human skin exposed to sun produces pigments to absorb the light to protect the skin from burning. The produced pigments result in a colour change. Plastics: Plastics are one of the most drastically effected materials from sunlight. They may not only change colour but also lose ...
Feb 15, 2017 · The Sun has actually set/risen and we see it due to the way light is bent across the atmosphere. Apparently due to coincidence of the size and distance of the sun, its exactly the same size - so if we see 50% of the sun, the sun is 50% below the horizon. So, I understand all this, so here is my question :
Oct 24, 2022 · A further point to identify these lines as definitely "belonging" to the Sun rather than the Earth's atmosphere or indeed interplanetary space, would be that you can obtain the spectra of other stars (hot stars, see below) where the Fraunhofer lines are mostly absent - this would have been known very early on.
Nov 13, 2015 · When liquid water meets dry air, it is not in equilibrium; water molecules evaporate off the surface until the amount of water in the air creates enough vapour pressure to achieve equilibrium. When water is heated to a temperature of 100C, the vapour pressure equals that of sea-level air pressure. Since the air pressure can no longer overcome ...
Jul 10, 2014 · The short answer remains "hydrogen and helium", plus what every metalicity the star started with. The reason is that at the temperatures of the sun's core production of the next stable step (carbon) is many orders of magnitude slower than helium production. Many. Right now the density and temperature of the core are regulated by the energy ...
A nonrotating Sun would also beget the observed anomalous precession, whose non-Newtonian component almost wholly arises from the inverse cubic term in the effective potential coming from the solution of the Einstein Field Equations for the Schwarzschild Metric. This metric assumes the central body (Sun in this case) is stationary and ...
