Today in Science Blog Posts
Happy Birthday, Joseph Petzval
In 1840, this Hungarian physicist introduced a lens design that could gather more than 20 times as much light as lenses used in earlier cameras.
How Long Does It Take an Engineer to Turn on a Light Bulb?
Misconception about electricity: Electrons carry the energy in an electrical circuit. Today, we investigate this theory with simulation.
The Science Behind Lie Detector Tests
Polygraph machines accurately monitor cardiovascular, respiratory, and electrodermal activity. But can they really determine whether a subject is being deceptive?
5 Fun Facts to Celebrate Fibonacci Day
Fun fact: The Fibonacci sequence can be found in flowers, pine cones, tree branches, and shells.
Möbius Strips: Where Math Meets Art
The Möbius strip was simultaneously and independently discovered by two German mathematicians in the 1850s. Today, this one-sided object is found in tools, art, nature, and more.
Extracting DNA: From Pumpkins to Mammoths
Here, we go over how to recover DNA from a pumpkin using a simple experiment, as well as how scientists made a recent breakthrough in DNA extraction research.
Happy Birthday, Adhémar Jean Claude Barré de Saint-Venant
The shallow water equations, a derivation of the Navier–Stokes equations, and Saint-Venant’s principle can all be credited to French physicist Adhémar Jean Claude Barré de Saint-Venant.
The History and Science Behind Vinyl Records
As vinyl records explode in popularity, we take a look back at the history of records, as well as the interesting science behind how they are produced — and how they play music.