how to
Get flash to fully experience Pearltrees
Make: Projects How-to Projects Library — Electronics, Arduino, Crafts, Solar, Robots
Explore our growing cookbook of DIY projects for the workshop, kitchen , garage, and backyard. Learn new skills, find family fun , build a robot or a rocket . Get started in electronics and use new platforms like Raspberry Pi and Arduino to power your inventions. Get inspired and start making something today. Welcome to the new Make: Projects!
Cavity magnetron
Magnetron with section removed to exhibit the cavities. The cathode in the center is not visible.
Refrigeration
Commercial refrigeration Refrigeration is a process in which work is done to move heat from one location to another. The work of heat transport is traditionally driven by mechanical work , but can also be driven by heat, magnetism , electricity , laser , or other means.Thing in a Jar
Thing in a Jar 7 inches by 4 inches, mason jar Pictured above is the Thing in a Jar that's usually sitting in my office at work.
The Birkeland–Eyde process was one of the competing industrial processes in the beginning of nitrogen based fertilizer production. It was developed by Norwegian industrialist and scientist Kristian Birkeland along with his business partner Sam Eyde in 1903, based on a method used by Henry Cavendish in 1784. [ 1 ] This process was used to fix atmospheric nitrogen (N 2 ) into nitric acid (HNO 3 ), one of several chemical processes generally referred to as nitrogen fixation .
Birkeland–Eyde process
Hydrochloric or muriatic acid is generally made by the action of sulphuric acid on common salt.
Hydrochloric Acid and Sodium Sulphate
