Today we’re talking about heat transfer and the different mechanisms behind it. We’ll explore conduction, the thermal conductivity of materials, convection, boundary layers, and radiation.

In this video Paul Andersen details the characteristics of electromagnetic waves. Electromagnetic waves are transverse waves that can move through both mediums and vacuums. The electric and magnetic fields oscillate perpendicular to...

Mr. Andersen explains the Central Dogma of biology. He shows how DNA is transcribed to form mRNA and how mRNA is translated into a protein.

In this video Paul Andersen explains how heat is the movement of energy from an object with a higher temperature to an object with lower temperature. Heat transfer can occur through conduction, convection, and radiation.

In this video Paul Andersen explains how energy can neither be created nor destroyed but may be transferred. Energy comes in many forms (including chemical, mechanical, light, electrical, and thermal). In AP Chemistry students must be...

In this video Paul Andersen explains how energy can be transferred from one system to another. In a closed system the energy can be transferred as either work or heat. Thermal energy transfer is know as energy transfer through heat. ...

Paul Andersen explains how energy is conserved within a system. In both macroscopic and microscopic collisions the amount of energy before the collision is equal to the amount after. He then defines heat as energy transfer between...

New ReviewGet your leaf-blowers ready!

Blue Origin's New Glenn rocket was rolled out to the launch pad. The massive rocket is slated to launch NASA's ESCAPADE mission to Mars. Credit: Space.com | footage courtesy: Blue Origin | edited by Steve Spaleta

Does anyone really think there's something magical about five seconds when it comes to food and the floor? There's a press release out this week (I still can't find the study) that claims that the five second rule is "real". It isn't. If...

In this science project, you will collect macroinvertebrate samples from multiple points along a body of water, ideally a small creek or stream, and test the pollution burden and biodiversity of small organisms or insects to see if...

Gain a foundational understanding of the IT industry, setting the stage for a deeper dive into specific job roles and markets.

This video explains heat transfer methods of radiation, conduction, and convection.

Howcast - Cell phone contracts might seem iron-clad, but loopholes may let you get out of your plan without paying a dime.

Howcast - A Zip drive is an alternative to burnable CDs and flash drives for storing and transferring computer data and files.

Howcast - Simplify your financial planning and take charge of your future by rolling over funds from old retirement plans -- like a 401(k) from a former job -- into a single Individual Retirement Account, or IRA. Here's how.

Howcast - Transferring property can be a daunting task, but you can get through the process using these steps.

Howcast - Learn how to do the basic step in merengue from professional dancers Ernesto Palma and Crystal Rodriguez in this Howcast dance video.

Howcast - Learn how to do Cuban motion when dancing merengue from professional dancers Ernesto Palma and Crystal Rodriguez in this Howcast dance video.

Howcast - Learn how to do one-arm alternating sit-ups with a medicine ball from certified personal trainer James Rizzo in this ab workout video from Howcast.

Howcast - Learn how to do the coin vanish trick with step-by-step instructions from magician Jason Suran in this magic tricks revealed Howcast video.

Howcast - Learn how to do the pencil, also known as el lapiz, from tango instructors Diego Blanco and Ana Padron in this Howcast Argentine tango dance video.

Howcast - Learn about leaky gut syndrome from gastroenterologist Lisa Ganjhu, M.D. in this Howcast video about stomach problems and digestive disorders.

Howcast - Make the switch from one college to another as simple as possible with these tips.