E=hc/lambda? So i solve for lambda and plug it into my above equation? Does v=4E+9?NascentOxygen said:
sphys4 said:
NascentOxygen said:Are you sure you have represented the question correctly? Because a hot body emits photons over a whole spectrum of energies.
And I presume you didn't intend to write "protons"? Otherwise, I'm outta here.
ehild said:
sphys4 said:
NascentOxygen said:0.075m seems correct. So at 4GHz we are talking about microwave energy, way below visible light. (I wonder is this venturing beyond the limits of black body radiation equations?)
To find T you need to divide b by lambda.
Considering that the lowest temperature found in outer space is about 3 Kelvin, then I think you've taken us to another universe.
At least it's not a negative Kelvin. :uhh:
Did you invent this question, or it is out of a book?
A black body is an idealized object that absorbs all wavelengths of electromagnetic radiation that fall on it. It also emits radiation at all wavelengths, making it a perfect emitter of heat energy.
The temperature of a black body can be determined using Wien's displacement law, which states that the wavelength at which a black body emits the most radiation is inversely proportional to its temperature. This is known as the peak wavelength, and it can be used to calculate the temperature of the black body.
Knowing the temperature of a black body is important in many scientific and engineering applications, as it can help us understand the behavior of objects and materials at certain temperatures. It is particularly useful in fields such as astronomy and thermodynamics.
A black body differs from other objects in that it absorbs all radiation that falls on it, whereas other objects may reflect or transmit radiation. This makes it a perfect emitter of heat energy, and its temperature is solely determined by the amount of radiation it absorbs.
Yes, the temperature of a black body can change depending on the amount of radiation it absorbs and emits. As the temperature increases, the peak wavelength of its emission shifts to shorter wavelengths, and vice versa. However, a black body always follows Wien's displacement law, regardless of its temperature.