fiberglass
Fiberglass Insulation, R Value of 3.14. Pine board has an R Value of 1.74
As strange as it may sound dead or still air is one of the best insulators. Insulation such as fiberglass or rock wool and styrofoam work because they are fluffy with trapped air. If you have a sheet of four inch thick R40 fiberglass and squeeze it into a wall made of 2X3 studs you will have less R value than than a 3 inch piece of fiberglass insulation. So the highest R value goes to the insulation that traps the most dead air per inch of thickness and is installed propperly.
Where you find wire insulation with ratings of 300 volts, 600 volts and 1000 volts, these are the highest allowable voltages that can be applied. A wire that is rated for 300 volts is good for 120 volts, 240 volts and 277 volts. At test research facilities, insulation on a wire is tested to destruction. The label that is given to wire's insulation, as a result of the tests, is the highest safest voltages that can be applied to that particular wire. So when you see a wire that has a label stating that it is rated for 300 volts it means that any voltage under and up to 300 volts is safe to apply.
Refractory insulation is defined as insulation for extremely high temperatures. The threshold of temperature of insulation for refractory insulation is > 815 Celsius.
The equatorial region near the equator receives the highest insolation due to the direct angle of the sun's rays. This region receives a higher amount of solar energy compared to other areas on Earth.
Averaged through the year, Polar Climates receive the least insolation at the surface. Because these latitudes are tilted further from the sun, solar radiation must pass through more of the atmosphere, and is therefore attenuated.
they aksing for which zone has the highest average they not aksing for all oceans.......
Spray foam insulation provides the highest R-value for optimal energy efficiency in a building.
Aerogel is considered one of the highest insulation materials available, with a very low thermal conductivity that makes it effective at reducing heat transfer. It is lightweight and has excellent insulating properties, making it a popular choice for applications requiring high levels of insulation.
fiberglass
Temperate Hot in the summer, cold in the winter Tropical Has highest insulation Polar Has lowest insulation
neritic zone
intertidal zone
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The zone that has the highest insolation is the Tropics, located near the Equator. This region receives the most direct sunlight throughout the year due to the angle of the Earth's tilt.
The highest death zone elevation that climbers have successfully reached on Mount Everest is 8,848 meters (29,029 feet).