Make a heat telescope by putting the bulb of a thermometer in a paper coffee cup lined with aluminum foilOn a cool dry, clear night point the telescope at the sky and after a few minutes read the thermometerThen point it at the earth for a few minutes and read the thermometer againYour results indicate:a) the sky is hotter than the earth.b) the earth is hotter than the sky.c) both the sky and the earth have the same temperature.
a single fiber versus many fibers, twisted or not, will always be just that: a single fibre There is nothing magic about having more of the same thing being stronger than a single one.
I think when torsion is applied - it makes the particle more intact ( closer) than undisturb one but the volume is the sameIt's normal several fiber is more stronger than single fiberno issue at all but if single fiber compared to twisted single fiberthat mattersWe know that Tensile Stress is equal to the force exerted on the fiber directly proportional to area affectedOn situation A ( single fiber ) you can directly apply force immediately ( fiber on a pre-stress condition)While in condition B twisted fiber - you need to wind up bring the twisted fiber into a pre-stressed position before a force can be appliedTwist delays timing but the strength is the same : using material applied same force.
B, I would hopeWe know the earth loses heat by skyward radiation, and on some very still nights you can actually feel the difference on your face.
