Engineering
5 ideas, each explained on one page with a 60-second lesson you can play right there.
-
Assay
An assay is a laboratory test that detects or measures a specific target substance, called an analyte, in a sample.
-
Doppler Effect
The Doppler effect changes the observed pitch or frequency of waves when a source and observer move relative to each other.
-
Flying buttress
How external arched flyers redirected heavy vault forces to massive outer piers, creating space for Gothic stained-glass windows.
-
Jet Propulsion
Jet propulsion pushes objects forward by shooting out fluid in the opposite direction, powering aircraft, rockets, and swimming squid.
-
Rib vault
A rib vault is an arched ceiling frame made of crossed stone ribs filled in with thin masonry panels.