Abbreviations
No. Just because they are called shorts doesn't mean they make you shorter.
To make longer and to make shorter
To Make it Shorter It means To not Work
To compress means to make things smaller and more dense. If you mean compress as in spinal compression, it would mean to make things shorter.
If after means shorter length, then that would be a sixteenth note. Two sixteenth notes equal an eighth note.
A higher note
The Longer tube is the Lower pitched note and the Smaller lengthed one is the Higher Pitched note. The same with any wind instrament.
NO, it is not safe and you can get a cold. However it can make you feel shorter because there is a lot of weight in you, doesn't mean you will be shorter basically dizzy.
It means make a note of, or write down.
Han Solo claimed the Millennium Falcon can make the Kessel Run in twelve parsecs. You will note though that "parsecs" is a unit of distance. So, if Captain Solo's claims are true, he may mean that the Falcon can make the Kessel Run in a shorter distance than what is known.
Ways that make you appear shorter is slouching, slouching will make you appear shorter so if you stand straiter you will appear taller
If the column of air gets shorter, the tone gets higher, however, on a trumpet, pressing keys adds to the length of the tubing. What determines what note you get is how fast your lips vibrate, and what partials are available with the particular valve combination you are using.