can anybody please tell me what should i write on my project contents( topic-Thermal radiation)
Answers
Answer:
Thermal radiation ranges in wavelength from the longest infrared rays through the visible-light spectrum to the shortest ultraviolet rays. ... The total radiant heat energy emitted by a surface is proportional to the fourth power of its absolute temperature (the Stefan–Boltzmann law).
Explanation:
Its made off..
Thermal radiation is electromagnetic radiation emitted from all matter that is at a non-zero temperature in the wavelength range from 0.1 μm to 100 μm. It includes part of the ultraviolet (UV), and all of the visible and infrared (IR).
propeties of thermal radiation:
Thermal radiation depend on the following properties of the emitting object or body:
• Surface temperature
• Smoothness or roughness of the surface
• Spectral absorptivity
• Spectral
Calculation:
The rate of heat transfer by emitted radiation is determined by the Stefan-Boltzmann law of radiation: Qt=σeAT4 Q t = σ e A T 4 , where σ = 5.67 × 10−8 J/s · m2 · K4 is the Stefan-Boltzmann constant, A is the surface area of the object, and T is its absolute temperature in kelvin.