Calculate the percentage of the total radiation flux emitted in the visible light (0.4 - 0.7 um) from the sun. Assume Tsun = 5770K.
Calculate the percentage of the total radiation flux emitted in the visible light (0.4 - 0.7...
2. Ultraviolet light emitted by the sun has wavelengths between 200 nm and 400 nm. Visible light is between 400 nm and 700 nm. Will a photon of ultraviolet light from the sun break the chemical bond in an oxygen molecule, which has an energy of 494 k.J/mol? Will a photon of visible light break this bond?
Estimate the flux density of the radiation emitted from the solar photosphere.
Calculate the average photon energy of the radiation emitted from the sun (e.g. a 5780K blackbody radiator). Calculate the average photon energy emitted from earth (e.g. a 300K blackbody radiator). Provide each answer in eV.
Q1: The sun can be treated as a blackbody at an effective surface temperature of 10,400 R. The sun can be treated as a blackbody. (a) Determine the rate at which infrared radiation energy (0.76-100 um) is emitted by the sun, in Btu/hft. (b) Determine the fraction of the radiant energy emitted by the sun that falls in the visible range. (c) Determine the wavelength at which the emission of radiation from the sun peaks (d) Calculate and plot the...
Example 1 Calculate the energy transferred by photon (Eph or E) for a monochromatic radiation with wavelength of: Photon Energy hc E = a h is planck constant, C velocity of light in vaccum (m/s) and is wavelength of radiation (m) 0.4 um 1.08 um 1.8 um a) b) c) [Assume that h = 4.1358 x 10-15 eV and C = 3 x 108 m/s] Example 2 Consider a 100 cm2 photovoltaic cell with reverse saturation current lo= 10-12 A/cm2....
Calculate the energy flux for a gravitational wave of strength h= 10-21 if the frequency is 1000 Hz. If the wave from the previous problem is incident on the Earth what is the energy flux incident on the Earth? If they come from 20Mpc away at what rate was the source losing energy to gravitational waves when they were emitted? How far away would the Sun need to be to produce the flux in electromagnetic radiation?
Infrared radiation has frequencies from 3.0×1011 to 3.0×1014 Hz, whereas the frequency region for visible light is 4.3×1014 to 7.5×1014 Hz. We can say that: 1. The speed of infrared radiation is ____ (higher than, lower than, the same as) visible light. 2. The wavelength of infrared radiation is ____ (higher than, lower than, the same as) visible light.
3) Calculate the wavelength of the light that is emitted when the electron in a B4+ ion drops from n = 9 to n = 6, and tell whether this is in the infrared range, the visible range, or the ultraviolet range.(ANSWER:236 nm)
f Calculate the wave length (in nm) of the light (electromagnetic radiation) emitted during the following transitions between atomic energy levels (designated by standard spectroscopic notation). Give numerical answers only! 4a) The transition 4d right arrow 2p in ordinary hydrogen 4h) The same transition, but for muonic hydrogen (the mass of a muon is about 200 times that of an electron) 4c) The same transition but for a single electron in (singly ionized) 4He+. 4d) The transition of a barely...
Consider four different types of electromagnetic radiation: radio waves, infrared, visible light, and X-rays. Arrange the types of radiation from the lowest to the highest frequency, and from the highest to the lowest energy.