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Sound waves produced by a tuning fork are shown on an oscilloscope @ http://www.wonderwhizkids.com/physics/waves-and-optics/sound-waves

Sound waves produced by a tuning fork are shown on an oscilloscope @ http://www.wonderwhizkids.com/physics/waves-and-optics/sound-waves

Sound Intensity and Decibels Distinctly Defined - YouTube by Doc Physics

Sound Intensity and Decibels Distinctly Defined - YouTube by Doc Physics

States of matter @ http://www.wonderwhizkids.com/physics/thermal-physics/change-of-state

States of matter @ http://www.wonderwhizkids.com/physics/thermal-physics/change-of-state

Download the application from the Mac App Store. It's free.

How to Create an Interactive Book With iBooks Author

From the same guys that made the Diet Coke and Mentos videos.  Potential to kinetic energy transfer in action!

From the same guys that made the Diet Coke and Mentos videos. Potential to kinetic energy transfer in action!

NASA Research Scientist Shawn Domagal-Goldman spoke to students taking the semester-long course, "Evolution of the Biosphere," about searching for water on other planets. November 2013

NASA Research Scientist Shawn Domagal-Goldman spoke to students taking the semester-long course, "Evolution of the Biosphere," about searching for water on other planets. November 2013

In this Instructables guide I will show you how to make your own - Arduino -automatic watering system for your "desk" flower (or plant). The whole procedure is very easy and you can complete this guide in about 30 min. The goal is to automatically watered the plant when the soil moisture decreases, so we will use one "soil hygrometer" sensor for this measurement. For watering, we will use one small air-pump motor that will blowing air into the bottle from one small pipe! T...

Arduino Automatic Watering System

In this Instructables guide I will show you how to make your own - Arduino -automatic watering system for your "desk" flower (or plant). The whole procedure is very easy and you can complete this guide in about 30 min. The goal is to automatically watered the plant when the soil moisture decreases, so we will use one "soil hygrometer" sensor for this measurement. For watering, we will use one small air-pump motor that will blowing air into the bottle from one small pipe! T...

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