In what region of the electromagnetic spectrum do room- temperature objects radiate? What problems would we have if our eyes were sensitive in that region?
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A: Given data: Wavelength (λ) = 1.21×10-5 m
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- ) a) What temperature is required for a black body spectrum to peak in the X-ray band? (Assume that E = 1 keV). What is the frequency and wavelength of a 1 keV photon? b) What is one example of an astrophysical phenomenon that emits black body radiation that peaks near 1 keV? c) What temperature is required for a black body spectrum to peak in the gamma-ray band with E = 1 GeV? What is the frequency and wavelength of a 1 GeV photon? d) What is one example of an astrophysical phenomenon that emits black body radiation that peaks at 1 GeV?What temperature, in °C, is a blackbody whose emission spectrum peaks at 320 nm ? T= Submit Request Answer Part B VE ΑΣΦ T= Submit What temperature, in °C, is a blackbody whose emission spectrum peaks at 4.60 m? VE ΑΣΦ P By Request Answer ? Stag °C ? °CExplain why different elements produce different spectral absorption and emission lines. Calculate the wavelength of a photon that has an energy of 4.96 eV. (Hint: h*c {Planck's constant * the speed of light }= 1240 eV*nm;) What type of radiation/light (from the electromagnetic spectrum) is the photon from the previous question? Why is it that radio telescopes need to be so large or organized in arrays? this is all one question with different parts. Thank you.
- In what part of the EM spectrum would a photon of energy 2.1 ✕ 10−11 J be found? What is its energy in electronvolts?There are several proteins that exist in nature that are fluorescent, which means they absorb visible light or other electromagnetic radiation and reemit that light, usually at a longer wavelength. One of the more prevalent fluorescent proteins is GFP, or green fluorescent protein, which emits bright green fluorescent light when exposed to light in the blue to ultraviolet region of the electromagnetic spectrum (see the photo). The main absorption, or excitation, wavelength for one type of GFP is 395 nm. (a) What is the energy (in eV) of a photon in this absorbed light? The emission spectrum of the light from the GFP peaks near 509 nm, which is in the shorter wavelength (higher energy) portion of the green part of the visible spectrum. (b) What is the energy (in eV) of a photon in the emitted light? (c) If the emitted light corresponded to the longest wavelength in the Balmer series from a hydrogen-like atom, what would be the effective value of Z for this atom? (Note: Z will not be a…After you calibrate the SpectroVis Plus spectrometer, you must a. run a full spectrum by selecting Sensors/Calibrate/Full Spectrum. O b. change the mode by selecting Sensors/Time-Based. Oc. collect a full spectrum of the sample to determine the wavelength of maximum absorbance. O d. change the mode by selecting Sensors/Data Collection.
- 2. Suppose the downward irradiance at the top of a layer of an absorbing gas is 600 Wm2, the upward reflected radiation is 150 Wm-2, and the radiation emerging at the bottom of the layer is 200 Wm-² (a) What is the reflectance of the layer? (b) What is the transmittance of the layer? (c) How much radiation is absorbed in the layer (Wm-²)? (d) What is the absorptance of the layer?What is the energy of an ultraviolet photon with wave- length 139 nm?