Infrared rays
The less dangerous wavelength from Sun's energy is infrared rays. These are the waves that produce heat and are known as thermal waves.
The heat we feel from sunlight, a fire are all infrared. The infrared wavelength is further broken down into 3 categories -----
1. Near infrared
2. Mid infrared
3. Far infrared
Near infrared are the wavelengths that are used to send messages to TV from remote controls. They are not hot at all , infact we can not feel them too.
Mid infrared are the waves where they begin to produce heat. To these rays, our body's nerve endings can sense. These have the frequency greater than near infra red.
Far infra red rays produce heat. We can find room heaters in cold weather countries during winter. People have far infra red heaters in their houses over there. They only raise the temperature of the object they have been focused on and does not raise the temperature of surrounding free air.
The less dangerous wavelength from Sun's energy is infrared rays. These are the waves that produce heat and are known as thermal waves.
The heat we feel from sunlight, a fire are all infrared. The infrared wavelength is further broken down into 3 categories -----
1. Near infrared
2. Mid infrared
3. Far infrared
Near infrared are the wavelengths that are used to send messages to TV from remote controls. They are not hot at all , infact we can not feel them too.
Mid infrared are the waves where they begin to produce heat. To these rays, our body's nerve endings can sense. These have the frequency greater than near infra red.
Far infra red rays produce heat. We can find room heaters in cold weather countries during winter. People have far infra red heaters in their houses over there. They only raise the temperature of the object they have been focused on and does not raise the temperature of surrounding free air.
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