Firstly, are you talking about the actual size of the known universe doubling or every single thing in it ? For instance, we know that Wales stays exactly the same size as it was the day before and we can determine this by measuring it with known units of measurement. If you're saying that the units of measurment somehow double without us knowing, a metre (for example) is measured in light-seconds and is roughly one three hundred millionth of a light-second. Since the speed of light and seconds* are constant we know that any change in its size would be, um, rapidly detected.
*Seconds are measured by the atomic radiation of the caesium 133 atom which again wouldn't alter should everything be secretly doubling in size.
God I'm bored.
Light is absorbed by things it reflects off and the photons are also then radiated in different colours. Even the act of seeing light absorbs and slightly alters it. Light energy tends to disperse and increase its distribution and so the high frequency energy drops rapidly below visibility. That's why turning off a light source simply results in the room going black when the light is turned off. The energy is rapidly dispersed and the room goes dark. Shining a torch allows a strem of light to eventually disperse, radiate, split into different frequencies, turn into other energy eg. heat.
Alcohol stinks because of the other stuff in it reacting with enzymes in your mouth. But it generally just stinks anyway as it's full of esthers and other compounds which give off smells. Something that's been refines like vodka which is close to pure alcohol (and water) doesn't smell as much. If you drink bottle or cask conditioned beer that still has yeast in it it's still fermenting when you drink it and reacts with enzymes in your digestive system to create even more smells.
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