NEWTON S CRADLE Balancing Ball Newton s Cradles are great for home of the office desk This 6 tall hypnotizing toy will keep you amused for hours Newton s Cradle of an odd number of identical steel balls each suspended by a bifilar suspension from a sturdy frame The balls are aligned along a horizontal line just touching When the ball on one end is pulled aside and allowed to swing as a pendulum it hits the next ball The outcome is fascinating the one ball on the far end is knocked away from the others with the same speed as the first ball had initially and all of the other balls remain nearly at rest If you pull back two balls and let them strike the others two balls are knocked from the other end and all the other balls remain nearly at rest Great for stress relief and makes a wonderful gift Wood Grain base 5.75 x 5 with metal balls
Eisco Labs Hydro-Electric Power Station - Working Water Turbine To Generate Electricity
Eisco Labs Hydro-electric Power Station This Hydro-electric power generator is composed of a well made turbine with transparent cover connected to a small motor to generate electricity. Ideal for classroom demonstrations, students can directly observe the process of conversion of water flow to electrical energy that occurs in hydro-electric power plants.A brass chromed water wheel is mounted in a cast aluminum casing about 10cm in diameter. The water turbine is mounted on a metal base together with a dynamo, motor, lamp, LED, and a two way selecting switch.The apparatus is specially designed for operation under low water pressure, and performs extremely well with higher water pressure. Supplied are a 25mm diameter outflow tubing and an inlet tubing with adaptor for larger size water taps. A switch selects delivering power to either a lamp or a Newton's Color Disc, which when spinning appears to turn white. The LED has constant power, but can be removed if you instead want to draw current from the output terminals via the 4mm leads.Dimensions of the unit are 13 x 9 x 7.5 inches. Supplied with manual.
Santa's Scientific Christmas Coal, Premium Cotton Bag and 5 Small Lumps (1" x 1" x 1" approx. -- Medium Marble Sized) - Genuine American Coal - Includes Experiment
5 lumps of genuine American coal is the perfect gift for anyone on the naughty list. But it doesn't have to be all bad news - a link to a science experiment is included! (Note, the experiment does require some other ingredients not included with the coal). Marble sized lumps are packed in a cotton drawstring bag, with a card that includes a link to an experiment to grow snowflake like crystals on your coal.
Our Caffeine Vinyl Sticker is a tribute to the world's favorite drug. We make it in both black and white to meet your needs. This listing is for the white sticker. It measures approximately 5 inches in width and 3 inches in height. It is all weather and can be used on virtually any smooth surface such as car windows, laptops, walls, file cabinets and lockers. Have fun explaining to everyone what it is. It is removable, but not re-usable.
Have fun with this Triceratops hand puppet - perfect for building creative and imagination skills while having fun. Crafted of rugged, flexible rubber with amazing detail! See the scales, teeth and horns. Triceratops was about the size of a school bus and is easily recognized because of the 3 horns on its face and the large bony plate at the back of its skull. It's name means "Three Horned Face".
Measures approx 8 x 12 Inches.
Rubber surface wipes clean.
Recommended Ages: 8 years and up.