What does drowning look like?

Having encountered four drownings, saved two, lost two, and having lost one of my best friends to drowning when I was not there, I strongly suggest you read this, particularly if you have children. Learn what to look for. Slate Article: Drowning doesn’t look...

NASA Outreach Arduino Lesson

Get started with the Arduino Integrated Development Environment and the Uno. File, Examples, Basics, Blink Learn the code: better_blink code Connect an external LED and resistor Learn about pseudo-analog, otherwise known as “Pulse Width Modulation” = PWM...

America’s Last Physical Model

“When I start a new project, I go and I rent a kayak and I float the river…because I want to touch the river. I want to see the things I’m not seeing so that when I get back and set up my model, I understand how the world works.” “The idea that science demystifies the...

Possible 7C temperature rise by 2100.

Atmosphere may be more sensitive to greenhouse gasses when it is warmer. Makes sense to me. Possible 7C temperature rise by 2100. Which would bring 20m or so sea level rise with it. If we don’t stop air-dumping carbon now. “In a paper in the journal...

Crash Course Arduino Inputs and Outputs

Crash Course Arduino Input Output Reading: Electricity First hour: Inputs Using a meter to read Voltage. One battery, two batteries, three batteries, in a pack. In most cases you want to connect the black lead to ground. Graphite variable resistor with alligator...

Crash Course Solidworks for Elephant Toys

Ultrabasics: Pin the Menubar: Upper left of the screen, Solidworks logo, hover on the black triangle to the right of the logo to expand the menu. On the right end of that menu bar, there is a grey pushpin. Click it to pin the Menubar open. Start a New Part: File,...