Yes, let say your freezer is under the sun or too close to the wall or situated in a hot area of the house or anyplace, the compressor will have to work double time to offset the additional heat to the casing which if under the sun would heat up like a car in an open parking lot.
A2: Maybe not "double time", but the heating of the condensor coils (the outside ones on back or bottom)will definitely lower its efficiency. If the condensor coils get too hot, and can't get cool enough, it can burn out the compressor, too. Most modern units are high-efficiency, low amperage, and run-time, so they aren't designed to run continuously. Most modern freezers and refers have the great, new sprayed-in foam insulation, so, the direct heat of the sun only affects the inside slightly. Any heating of outer casing should only warm contents slightly; unless it is a very old unit or has leaky seals.
Without this effect we would all be dead.
Disadvantages of the heating effect of electric currents are: short circuits, house fires, and explosions. Advantages of the heating effect of electric currents are: electric light, toasting food, and keeping a room warm.
Freezer Burn is the effect of poor sealing and/or storage of foods in a Refrigeration unit.
I also like to add to the solar shade, a solar panel curtain for full effect. It does help with the electric bill, keeping the home warm in winter, cool in summer.
Cold temperatures have a drastic effect on an enzyme's activity level. Cold temperatures usually dramatically slow down an enzyme's activity.
Disadvantages of the heating effect of electric currents are: short circuits, house fires, and explosions. Advantages of the heating effect of electric currents are: electric light, toasting food, and keeping a room warm.
The sun
Where greenhouse gases (CO2) enter the atmosphere from burning fossil fuels, and build up and build up, keeping more of the suns heat trapped in the atmosphere and on earth, raising temperatures.
electric shock
The Seebeck effect is used in thermocouples. If two dissimilar metals conductors are joined and the two joints (junctions) are kept at different temperatures then a voltage is produced. This is dependant on the tyes of metals used and the temperature difference between the junctions. There is a reverse of the Seebeck effect called the Peltier effect where a current through the two different materials results in a temperature difference between the junctions.
waves
Keeping people entertained, and as a side-effect keeping them fit, healthy and happy.