); gtag('set', {'user_id': 'USER_ID'});
What Is Far Infrared Radiation?

What Is Far Infrared Radiation?

WHAT IS FAR INFRARED RADIATION?  Each of the infrared wavelengths has its penetrating power through the atmosphere and through the skin of man. Infrared waves in the range of far-infrared radiation pass through the air without heating it. IR rays can penetrate deep...
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