gap
The distance between two threads in a screw is called the pitch. It is the measurement of how far the screw advances with one complete turn.
This sounds like an easy question, but the answer depends on which type of thread call-out you are trying to read. There are multiple types of screw threads and each has its own call-out; but many are similar in syntax. The most common screw thread style in the USA is the UN-series. These screw threads are specified in ANSI/ASME B.1. An example of a UN-series thread call-out is: 1/4"-20 UNC-2A Decoded it is: Nominal Major Diameter (1/4")-Threads-per-inch (20) Type of thread (UN) Sub-thread-series (C)-Class-of-fit (2A) An example of the M-series thread call-out is: M16x1.5-6g Decoded it is: Type of thread (M) Nominal major diameter (16) Thread pitch (1.5) class-of-fit (6g) For more detailed information here is a link to a nice PDF book which gives very clear basic information on screw threads: http://www.ring-plug-thread-gages.com/ti_starret.pdf. I do hope that you found this information helpful.
The inclined plane has been utilized probably billions of times . . . especially if you call screw threads a coiled inclined plane.
a half
I assume you refer to the distance between the points.I assume you refer to the distance between the points.I assume you refer to the distance between the points.I assume you refer to the distance between the points.
distancia
The absolute value is the distance between a number and zero on a number line.
That would be a "phillips" heades screw.
A Dowel screw.
That is known as an "astronomical unit".
WAVEHEIGHT
It is called the absolute value of the number.