Radio waves have the longest wavelength, and gamma rays have the shortest wavelength.
Read moreWhat is electromagnetic wave with diagram?
Electromagnetic waves are shown by a sinusoidal graph . It consists of time-varying electric and magnetic fields which are perpendicular to each other and are also perpendicular to the direction of propagation of waves. Electromagnetic waves are transverse in nature.
Read moreIs microwave good for heating?
Are microwave ovens safe? When used according to manufacturers’ instructions, microwave ovens are safe and convenient for heating and cooking a variety of foods . However, several precautions need to be taken, specifically with regards to potential exposure to microwaves, thermal burns and food handling.
Read moreWhat is principle of microwave heating?
The principle of microwave cooking is conversion of electromagnetic energy into thermal energy within meat . During cooking, microwave energy is absorbed by rotation of water molecules and translation of ionic components in meat; the water content and the dissolved ion content are, therefore, important factors.
Read moreWhich heating is used in microwave oven?
A microwave oven (commonly referred to as a microwave) is an electric oven that heats and cooks food by exposing it to electromagnetic radiation in the microwave frequency range. This induces polar molecules in the food to rotate and produce thermal energy in a process known as dielectric heating .
Read moreWhat electromagnetic frequency is harmful to humans?
Most mobile operators use from radiofrequency waves in the range up 300 MHz to 3 GHz that can be harmful for human health (1).
Read moreWhat causes electromagnetic frequency?
Electromagnetic radiation is produced whenever a charged particle, such as an electron, changes its velocity —i.e., whenever it is accelerated or decelerated. The energy of the electromagnetic radiation thus produced comes from the charged particle and is therefore lost by it.
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