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Type your answer here.. 23rd September 1943. Just before the end of the second world war.
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Who found heating effect of electric current?
Joule showed the heating effect due to the resistence of wire which cary the current.
Does a microwave use light energy?
yes its does because when the microwave is on and the plate is rotating,the light is actually heating the food. It is not the visible light that does the heating, that is provided simply so you can see inside the oven. It is the microwaves that do the heating, by agitating molecules of water in the food. That's why you can't heat dry food in microwave oven. The microwaves are EM radiation like visible light, but a different wavelength.
State the situations where heating effect of electric current is undesirable?
negative effect of science .. with picture
How do microwaves affect your body?
It depends on the wavelength, and the intensity. Most microwaves pass through us with no issues. Microwaves used for heating water will heat our tissues, causing damage / death. Microwaves used in older radar guns caused bone cancer when the patrolmen using those guns layed them on their legs between reading vehicle speeds.
Why Radio waves and microwaves are non ionizing radiation?
Because they don't have enough energy (or a short enough wavelength) to knock electrons off of atoms (ionization).
Why do fruits cook quickly in the microwave?
Microwaves heat food by causing the water molecules in the food to vibrate... there by heating the food. Water content and the mass of the food will effect the time taken for heating.
Name good or bad things about microwaves?
Microwaves are good for heating things fast. Don't stay near one, it can cause cancer because microwaves work on heating the water in the food, and we are 70% water and it could mess up our cells
What is the effect of microwaves on the human body?
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Is joules heating effect-a reversible effect?
yes,joule is a heating reversible effect .
How would you show the heating effect of a current?
how would you show the heating effect of a current?
Who found heating effect of electric current?
Joule showed the heating effect due to the resistence of wire which cary the current.
What animals can see microwaves?
There aren't specifically any animals that we have discovered that can see microwaves. However, bees are able to see ultraviolet radiation and snakes infrared.
Disadvantage of appliances that works on heating effect?
An appliance that works on heating effect consumes more electricity.
Science fair do heating and cooling effect the strength of glass?
No, heating and cooling does not effect the strength of a glass
What effect is heating an objects density?
By heating the density is lowered.
What dangers can microwaves do to humans?
Microwaves work by oscillating at the same frequency as boiling water. This causes the water molecules to heat up. Needless to say, since your body is about 70% water, microwaves can cause tissue damage by heating up and damaging cells.
What does it mean when a microwave oven uses convection microwaves?
A convection microwave uses both microwaves and convection heating to cook the food. The convection cooking allows the food to be browned and cooks the outer part of the food while the microwaves cook the interior of the food.
