WebDescription: A Slinky® is a toy and a science class tool made from a flexible 90 turn spring coil with a diameter of 2 3/4 inches. Each Slinky coil contains approximately 67 feet of spring steel wire and weighs about ½ pound. … WebFeb 22, 2012 · Here are a few tips on on vertical and slinky bore design. Vertical Bore Design. 1) The target (optimum) flow rate versus pipe size is: 2.8 – 3.2 gpm per loop for ¾” loops; 4 – 6 gpm per loop for 1” loops; 5 – 9 gpm per loop for 1.25” loops
Slinky - Wikipedia
The rules that govern the mechanics of a slinky are Hooke's law and the effects of gravitation. Due to simple harmonic motion the period of oscillation of a dangling Slinky is where T is the time of the period of oscillation, m is the Slinky's mass, and k is its spring constant. In the state of equilibrium of a slinky, all net force is cancelled throughout the entire slinky. This results in a stationary slinky with zero velocity. As the positions of each part of the slinky is gove… WebDec 3, 2014 · Here, 400 Slinky units were produced to James’ specifications: each was 2.5 inches tall, contained 80 feet of “high-grade blue-black Swedish steel wire” wrapped into 98 coils, and came packaged in simple parchment paper. how many people sleep with socks on
Slinky - The Strong National Museum of Play
WebSep 27, 2006 · It takes 80 feet of wire to make one Slinky. Invented by Richard and Betty James in 1945, over a quarter of a billion Slinkys had been sold worldwide by 2000... Betty … WebJun 1, 2013 · At the very least run an extension of wire past the slinky. There are way too many variables to judge with any accuracy how well an HF duck/dipole would work in a given installation. ... One thing gleaned from the text I referred to is that any sort of extension wire, stinger if you will, a feet beyond the end of a slinky will help lower the Q ... http://www.theinventors.org/library/inventors/blslinky.htm how many people sleep rough uk