How does having a rotating plate in a microwave help food to be heated eavenly?
As microwaves are emitted from several different sources in a confined space, the waves are reflected off the internal walls and a interference pattern is formed. There are areas of destructive superstition where the radiation intensity is at the minimum (nodes) and areas of constructive superstition where intensity is at its maximum (anti nodes). This is dependent of the path difference of the waves when they meet. Rotating the food around in the microwaves give a chance for the food to move through theese nodes and anti nodes, helping the food heat eavenly.
NR
Related Physics A Level answers
All answers ▸When 0.81 m of a wire with cross-sectional area of 3.1*10^-11 m^2 is connected across a 2 V battery a current of 1.6 A flows in the wire. Find the resistivity of the material of the wire.
Why is an object that moves in a circular path accelerating when it has constant speed?
You have a layer of glass with a refractive index of 1.5 and the glass is surrounded by air. A light ray shines into the glass and Total Internal Reflection occurs at the glass-air boundary. What is the critical angle?
When light above the threshold frequency of a metal is shone on the metal, photoelectrons are emitted. If the power of the light halves, are the maximum kinetic energy of the photoelectrons and/or the number of photoelectrons altered, and if so, how?