How to get 2000ºF Solar Power

How to get 2000ºF Solar Power

If a small magnifying glass will burn things with sunlight, how much power could you get from a lens as big as you? In this project we’re hacking open a rear projection TV, because that’s where you can find one of these amazing solar scorchers, for free. To get started, the first thing I’m gonna…

What is Concrete?

What is Concrete?

Concrete is as much a part of the urban landscape as trees are to a forest. It’s so ubiquitous that we rarely even give it any regard at all. But, underneath that drab grey exterior is a hidden world of complexity. Hey I’m Grady and this is Practical Engineering. On today’s episode – it’s concrete…