The universe is filled with thermal radiation, which has a blackbody spectrum at an effective temperature...
The cosmic background radiation permeating the universe has the spectrum of a 2.7-K blackbody radiator. What is the peak wavelength of this radiation? The constant in Wien's law is 0.0029 m ∙ K. Hint: the answer will be in mm
An opaque object that emits a thermal radiation spectrum is called a “blackbody”. As the temperature of a blackbody increases, what happens to the peak wavelength of the light it radiates?
The space is filled with background radiation, remnant of the early age of the universe. Currently the distribution of this radiation is similar to the radiation of a blackbody at the temperature of 2.7 K. What is λmax corresponding to this radiation? What is its total intensity? Compare the intensity of the background radiation to the intensity of the Sun at the visual wavelengths.
What is the temperature If the peak of a blackbody spectrum is at 17.0 m? What is the wavelength at the peak of a blackbody spectrum if the body is at a temperature of 1700 K? About 0.1ev is required to break a "hydrogen bond" in a protein molecule. Calculate the minimum frequency and maximum wavelength of a photon that can be accomplish this minimum frequency
Please make sure you give me the correct answer
13) The cosmic background radiation permeating the universe has the spectrum of a 2.7-K blackbody radiator. The energy density of deep space is 4.19 x 10-8 J/cm3 a, What is the peak wavelength of this radiation? b, Assuming the energy density of space is from these photons, how many photons are there on average in each cubic centimeter of space?
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...
(1) The intensity of blackbody radiation peaks at a wavelength of 668 nm. (a)What is the temperature (in K) of the radiation source? (Give your answer to at least 3 significant figures.) (b)Determine the power radiated per unit area (in W/m2) of the radiation source at this temperature. (2) What is the binding energy in eV of electrons in ruthenium, if the longest-wavelength photon that can eject electrons is 264 nm?
The spectrum of a blackbody has a peak wavelength of 5.30×10-7 meters. What is its temperature, in kelvins?
The illustration shows the
spectrum of electromagnetic radiation emitted by a blackbody at two
different Kelvin temperatures. The range of visible frequencies
(those that can be detected by the human eye) is also shown. (a) No
matter what the value of the Kelvin temperature T, the spectrum
decreases to zero at very high frequencies. Why is this? (i) At
very high frequencies the photon energy is very small compared to
kT. (ii) At very high frequencies the photon energy is...
The background radiation in space corresponds to what temperature blackbody radiation? a. 5800 K b. 0 K c. 98.6°F d. 273 K e. 2.7 K