Intensity usually comes to picture only when the body is not diffuse. In that case body will have different intensities in different directions. I think what you are talking about is the distribution of thermal radiations over the electromagnetic spectrum when the body is at constant temperature. Let us consider a diffuse body for simplicity. A body at a certain temperature emits radiation over a wide range of wavelengths. But there will be a certain wavelength about which the energy emitted per unit area of the emitting body is maximum. Now if you increase the temperature of the body this wavelength, about which energy emission is maximum, decreases. This shift in wavelength associated with maximum energy radiation with an increase in temperature is called Wein's Displacement.Karan Punjabi said:Guys I have little doubt and I want you to rectify that Am I wrong or right. I think anybody at room temp or any temp emits each and every type of radiation but intensity of radiation is less for high wavelength or low wavelength waves at room temp and intensity is good enough for visible light. I am asking this on understanding of black body.
Yeah i know Wein's law of displacement..but I want to ask that suppose I have a cell phone in my hand so would a normal object like cell phone would emit all types of radiations?benny_91 said:Intensity usually comes to picture only when the body is not diffuse. In that case body will have different intensities in different directions. I think what you are talking about is the distribution of thermal radiations over the electromagnetic spectrum when the body is at constant temperature. Let us consider a diffuse body for simplicity. A body at a certain temperature emits radiation over a wide range of wavelengths. But there will be a certain wavelength about which the energy emitted per unit area of the emitting body is maximum. Now if you increase the temperature of the body this wavelength, about which energy emission is maximum, decreases. This shift in wavelength associated with maximum energy radiation with an increase in temperature is called Wein's Displacement.
Yes. Though the rate at which hard gammas are emitted will be exceedingly low.Karan Punjabi said:Yeah i know Wein's law of displacement..but I want to ask that suppose I have a cell phone in my hand so would a normal object like cell phone would emit all types of radiations?
Radiation of the body refers to the release of energy in the form of electromagnetic waves or particles from the human body. This can occur naturally or as a result of exposure to external sources of radiation.
The level of harm from radiation of the body depends on the type and amount of radiation. Low levels of natural radiation from the body, such as heat and light, are not harmful. However, exposure to high levels of radiation, such as from X-rays or radioactive materials, can be harmful and should be limited.
The body produces radiation through several natural processes, such as cellular metabolism, digestion, and even simply existing. These processes result in the emission of low levels of radiation in the form of heat and light.
High levels of radiation exposure, such as from X-rays or radioactive materials, can increase the risk of developing cancer. However, the low levels of radiation produced by the body are not considered to be a significant risk for cancer development.
To protect yourself from harmful levels of radiation, it is important to limit exposure to external sources of radiation, such as X-rays and radioactive materials. Additionally, maintaining a healthy lifestyle and avoiding unhealthy habits, such as smoking, can help reduce the risk of developing cancer from radiation exposure.