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Your cart is empty.EISCO super ultimate wave form helix with wooden stand and it is not a toy. It is a scientific instrument. This looming tower of metal dwarfs the standard toy at twice the closed height (20 cm vs. the standard 10cm) and can be stretched out way longer than you would expect to amplify the impact of your demonstration. Plan on your students/friends/families/strangers not quickly forgetting the waves you form with this. If you plan on putting this down some stairs, the step height needs to be pretty tall (definitely taller than a standard staircase). Grades 9-14. For ages 14-21.
SS
Reviewed in the United States on May 13, 2023
I looked for these for months. I'm a retired science teacher, and I used these to teach about waves. I wanted one for each on my grandsons (who loved playing with mine).Conventional slinkys are no comparison. These long ones are available in science education supply catalogs, but they are very expensive. They were on sale here for half price -- at the regular price (around $50 each), I might not have bought them.
Kobe_Pup
Reviewed in the United States on May 17, 2022
the only complaint is that it arrived dirty and oily, but other than that its excellent, exactly what I wanted
Tara
Reviewed in the United States on January 28, 2020
Very sturdy and useful for classroom instruction. Used to represent p &s waves
Tony
Reviewed in the United States on September 28, 2016
Ok
Seldon Bradley
Reviewed in the United States on December 13, 2016
If you are looking for a toy for the kids buy this one - https://www.amazon.com/dp/B00AMJ5NOM/ref=cm_cr_ryp_prd_ttl_sol_18 - the standard (but improved) slinky from your youth.This one is an "instrument" for wave form demonstration - adult supervision required - must be handled carefully.How to do. Set up a stepladder in a space where you have 60/80 feet clear. Separate 4 coils and slip in a 6" piece of duct tape - facing the edge of the ladder and tape the 4 coils to the ladder. Holding the spring unit, back up until the spring lifts off the ground. This is the only way to see the subtle wave forms this "instrument" is capable of generating. CAUTION - Unfortunately, by the time the unit is suspended, its weight will pull the familiar-from-childhood kink in the last spring section you are holding. It is a demonstration tool - not a piece of art.
FredTownWard
Reviewed in the United States on May 10, 2015
You could justify this as a tool for scientific experiments, but the REAL reason to get it is the same reason you get a more ordinary Slinky like a :to play with it.Note: Also available in half size: .Note: Manufacturer not liable for lost productivity if you keep it on your desk.
Jessie Rohrig
Reviewed in the United States on March 31, 2015
My science department bought this to demonstrate waves for our 8th graders. Only teachers handled the slinky. It got very stretched out immediately and "jumped" off of its stand due to the overstretched-ness meaning that it also got tangled and we had to cut it. It wasn't the quality I was hoping for. I've had my hands on other large springs that were extremely durable but this one isn't it. It may last us another year or two. With very tight budgets it was a disappointment.
Eric
Reviewed in the United States on January 13, 2014
This is a high-quality, extra long slinky.Should say up front that it's too long to walk down stairs (the classic slinky trick). But what it's great for is creating waves with it. Stretch it out on the floor across a big room, one person holding each side, and make waves with it by moving the ends back and forth! Big waves (high amplitude), small waves (low amplitude), fast waves (high frequency), slow waves (low frequency) -- you can really see them. They even bounce off one end and come back. Also both people can create different waves and you can see the diffraction patterns.Of course you can also do the old hand to hand slinky thing.
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