Electrical Power, Conductors, and Your Dream Home: Crash Course Engineering #21

From Crash Course. Today, we’ll explore the materials electrical engineers work with. We’ll look at high-conductors, insulators, and how low-conductivity conductors can be used to generate light and heat. Crash Course Engineering is produced in association with PBS Digital Studios: https://www.youtube.com/playlist?list=PL1mtdjDVOoOqJzeaJAV15Tq0tZ1vKj7ZV PBS Space Time: https://www.youtube.com/channel/UC7_gcs09iThXybpVgjHZ_7g *** RESOURCES: https://indianapublicmedia.org/amomentofscience/ben-franklin-furry-situation/ https://www-spof.gsfc.nasa.gov/Education/woppos.html https://www.electrical4u.com/high-resistivity-or-low-conductivity-conducting-material/ https://www.performancewire.com/insulated-wire-protection/ https://sciencing.com/printed-circuit-boards-used-5031475.html https://www.livescience.com/38997-facts-about-tungsten.html https://www.celticgold.eu/en/gold-university/fake-gold-bars.html http://megaanswers.com/why-does-the-filament-of-a-bulb-burn-out-when-exposed-to-atmosphere/…

ANOVA: Crash Course Statistics #33

From Crash Course. Today we’re going to continue our discussion of statistical models by showing how we can find if there are differences between multiple groups using a collection of models called ANOVA. ANOVA, which stands for Analysis of Variance is similar to regression (which we discussed in episode 32), but allows us to compare…

The Polymer Explosion: Crash Course Engineering #20

From Crash Course. We’re continuing our look at engineering materials with third main type of material that you’ll encounter as an engineer: polymers. They’re made of long, repeating chains of smaller molecules known as monomers and today we’ll explore their strange history of polymers and the things that contributed to how we use them today.…

Regression: Crash Course Statistics #32

From Crash Course. Today we’re going to introduce one of the most flexible statistical tools – the General Linear Model (or GLM). GLMs allow us to create many different models to help describe the world – you see them a lot in science, economics, and politics. Today we’re going to build a hypothetical model to…

The Philosopher’s Corpse: Crash Course Recess #2

From Crash Course. Time for another break from our ongoing series to bring you the second episode of Crash Course Recess! This time, we share the story of Jeremy Bentham, a 19th-century English philosopher and co-founder of utilitarianism. More importantly – the story of his corpse! If you caught the first one earlier this year,…

Metals & Ceramics: Crash Course Engineering #19

From Crash Course. Today we’ll explore more about two of the three main types of materials that we use as engineers: metals and ceramics. We’ll discuss properties of metals, alloys, ceramics, clay, cement, and glass-ceramic materials. We’ll also look at the applications of our materials with microelectromechanical systems and accelerometers. Crash Course Engineering is produced…

The Replication Crisis: Crash Course Statistics #31

From Crash Course. Replication (re-running studies to confirm results) and reproducibility (the ability to repeat an analyses on data) have come under fire over the past few years. The foundation of science itself is built upon statistical analysis and yet there has been more and more evidence that suggests possibly even the majority of studies…