The Sun is green, actually. We'll go into why the blackbody effect means the Sun emits more green visible light than any other color, and why evolution and color perception mean it's ok to see it as yellow, anyway.

Scientists have taken a look at the underground lake found on Mars in 2018, and it might not be the only one! Plus, new clues might help us understand why the Sun’s atmosphere is so much hotter than the surface!

In this video we cover:

- How radio waves can be transmitted using oscilloscopes, transmitters, and rece
ivers
- How the transmission of radio waves can be used to transfer i
nformation
- The three different types of...

This video will explain the electromagnetic radiation spectrum, what it is, and how it can be used to observe space objects.

The video is a lecture presentation on communication, describing how various parts of the electromagnetic spectrum are used in different communication systems. The presentation covers topics including microwaves, satellite communication,...

This video demonstrates how to install a wireless network and explains at the interference, layout, and quality of signal. This clip is from the chapter "Wireless Networking" of the series "CompTIA Network+ Certification N10-007: The...

NASA’s MAVEN (Mars Atmosphere and Volatile Evolution) spacecraft has discovered “layers” and “rifts” in the electrically charged part of the upper atmosphere (the ionosphere) of Mars. The...

At the Consumer Electronics Show, CES 2014, Xandem Technology showed off a prototype that uses radio waves to track human body movement. Applications for this product could revolutionize industries like personal home...

Humans have long been shaping Earth's landscape, but now scientists know we can shape our near-space environment as well. A certain type of communications -- very low frequency, or VLF, radio communications -- have been...

This video engages students by asking questions and showing phenomena that relate to simple harmonic motion. The program provides examples and demonstrations using “singing” glasses, violin and piano sounding boards, oscillations in...

Upon viewing the Light video series, students will be able to do the following: List some of the reasons light is important to all living things. Understand that light is a type of energy. Describe how light behaves both as a wave and...