A screw thread, often shortened to thread, is a helical structure used to convert between rotational and linear movement or force. A screw thread is a ridge wrapped around a cylinder or cone in the form of a helix, with the former being called a straight thread and the latter called a tapered thread. A screw thread is the essential feature of the screw as a simple machine and also as a fastener.
Quick Answer. Tin is an element that is made up of the mineral cassiterite and mined from the crust of the earth. The combination of cassiterite and carbon in a high heat setting forms the type of tin that is used in modern applications. Continue Reading.
Getty Images / Stockbyte. Definition: A tin whistle is a simple instrument in the woodwind family. With just six finger holes, the tin whistle has a two-octave range and is tuned diatonically (i.e. containing all seven notes -- and no others -- of a major or minor scale).The tin whistle is a very common instrument in traditional Irish music and related genres of Celtic music.Despite its relative simplicity as an instrument, the tin whistle, when played by a skilled player, can be a dynamic and exciting instrument with a surprising level of nuance.etty Images / Stockbyte. Definition: A tin whistle is a simple instrument in the woodwind family. With just six finger holes, the tin whistle has a two-octave range and is tuned diatonically (i.e. containing all seven notes -- and no others -- of a major or minor scale).