Alexa, Call Dad: Amazon Currently Has some AMAZING Deals on Smart Echo Devices and Fire Tablets!

Echo devices are really useful and fun. We have a few at home and we use them all the time. Wether if it’s to play music, ask for the weather, help you with recipes, or manage your smart devices, these little gadgets can do a lot to improve your life.

Right now, Amazon has some amazing deals on almost all their Echo devices for Father’s day as well as on a few Fire Tablets.

–Echo Dot (3rd Gen) – Smart speaker with Alexa – $49.99 $29.99
–Echo (2nd Generation) – Smart speaker with Alexa and room filling sound – $99.99 $64.99
–Echo Plus (2nd Gen) with Philips Hue Bulb – Alexa smart home starter kit – $164.98 $119.99
–Echo Input – Smart device that brings Alexa to your speaker – Black – $34.99 $19.99

–Fire HD 8 Tablet (8″ HD Display, 16 GB) – Black – $79.99 $59.99
–Fire HD 10 Tablet with Alexa Hands-Free, 10.1″ 1080p, 32 GB, Black – $149.99 $119.99





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Angular Momentum Demo: Hoberman Sphere [Video]

This is a demonstration of the conservation of angular momentum using a Hoberman sphere, a plastic sphere frame that can be contracted by pulling on a string. Pulling on the string while the sphere is rotating causes the sphere’s moment of inertia to decrease and its angular speed to increase, demonstrating conservation of angular momentum.

It was created at Utah State University by Professor Boyd F. Edwards, assisted by James Coburn (demonstration specialist), David Evans (videography), and Rebecca Whitney (closed captions), with support from Jan Sojka, Physics Department Head, and Robert Wagner, Executive Vice Provost and Dean of Academic and Instructional Services.

[Physics Demo | Via TA]