Whenever someone tells me that glucose is the preferred fuel because we burn it first, I tell them that we burn alcohol before anything else. Using that logic, we should all be hocked up on liquor 24/7 . What makes real sense though, is that the body will metabolize the most toxic fuels first.
Some tips on electronics in cold: 1  Most electronic components are not damaged by ânormalâ cold temperatures. 2  Condensation can be a problem, if the temperature cycles between warm and cold with humidity.  Batteries lose capacity in cold (battery powered devices might not work in the cold)
I am not sure if they are the coldest objects in the universe but they may be. Until mid-70es we thought that black holes can't emit any radiation, and thus do not have any effective temperature. Then Hawking realized that quantum vacuum fluctuations could lead to black holes emitting radiation(*).