Obviously, we canât directly measure the size of the universe but cosmologists have various models that suggest how big it ought to be. For example, one line of thinking is that if the universe expanded at the speed of light during inflation, then it ought to be 10^23 times bigger than the visible universe.
If you smell burning from your AC unit, you probably have an electrical problem. The burning smell can come from either a blower motor that overheated or a mechanical failure of some sort. This is due to the build up heat of plastic insulation on wires, causing melting and the burning smell in your unit. Also, if plastic, rubber, or other objects get caught in your ductwork, this can cause a burning smell. Even dirty air filters can overheat your AC unit, creating a burning smell.
Causes of an Air Conditionerâs Buzzing Noise. If your air conditioner is making a buzzing noise that is loud enough to become a distraction in your home, chances are that something is wrong with your unit. When you hear a buzzing noise from your AC, you could be experiencing one of the following issues: 1  Malfunctioning compressorâ The compressor in your air conditioning unit is the part of your cooling system that works to pressurize and cool the refrigerant in the unit.