You may have had an ultrasound before, and wondered what that gel does. Well, that weird alien goop has a purpose, and it has to do with being like our weird human skin.

In an interview at the 1984 Republican Convention, former President Gerald Ford and Betty Ford talk about the re-nomination of President Reagan and Vice President Bush, the conservative movement in the Republican Party, the rising...

The third and final part of the block collision sequence.

The third and final part of the block collision sequence.

Diamonds are iconic, but some of them might make others a little green with envy.

Solar power is cheaper and more sustainable than our current coal-fueled power plants, so why haven't we made the switch? The real culprits here are the clouds, which make solar power difficult to control. Alexandros George Charalambides...

For most living things the color you see when you look at them is determined by pigments. But some of the most vivid colors we see in nature get their signature looks WITHOUT colorful molecules. How do these intense colors get their power?

SciShow Space shares the latest news from around the universe, including the first observation of a star-within-a-star, and the debut image from the newest telescope to be enlisted in the hunt for alien worlds.

For upside-down mirrors, super hot volcanic chimneys, and neon rocks with living microorganisms, look no further than the Guaymas Basin in the Gulf of California.

Solar sail technology was once only theoretical, but it's now being developed to propel spaceships. How did the first solar sails get into space, and why?

How do you engineer stealth? Sneak a peek at the methods employed to hide aircraft and boats from detection.

Mr. Andersen introduces the concept of waves. Both transverse and logitudinal waves are described. The relationship between wave speed, wave frequency and wavelength is also included.

It's kinda embarrassing when you spill stuff on your shirt and it makes a stain. So you might as well understand the science behind it, so at least you can act all smart and explain it to people.

You may have had an ultrasound before, and wondered what that gel does. Well, that weird alien goop has a purpose, and it has to do with being like our weird human skin.

In this video Paul Andersen explains how light can be absorbed, reflected, or transmitted as it moves from one medium to another. The reflection of different wavelengths creates the perceived color of an object. Absorbed light is...

The useful glare-blocking properties of polarized sunglasses are well-known to just about anyone who goes outside. What isn't so well-known is how they reduce glare in the first place. That answer is deceptively complicated!

In this video Paul Andersen explains how light that is perfectly reflected creates specular reflection. The angle of the incident ray is equal to the angle of the reflected ray. Specular reflection is also known as mirror-like...

In this video Paul Andersen explains how light can be refracted, or bent, as it moves from one medium to another. The amount of refraction is determined by the angle of incidence and the index of refraction. Snell's Law can be used to...

Take a look... A VERY special guest, LeVar Burton, explains how Double Rainbows are formed.

In this video Paul Andersen explains how waves interact with objects and with other waves. When a wave hits a fixed object it will be reflected and inverted. When a wave hits a free object it will be reflected without being inverted. ...

Light is everywhere … but it’s not as predictable as you might think. It’s a wave that travels in straight lines, yet it also reflects off of surfaces, refracts through various materials, and generally changes direction all the time!...

In this Algebra 1 lesson, we will identify the correct vertex form of the given graph of a quadratic function. We dive into Common Core Standard HS.F-BF.3 as we explore how transformations affect functions — specifically...

Pupil outcome: I can explain how mirrors are reflective materials that are used to change the direction in which light travels. Key learning points: - When light is reflected off the surface of an object, it changes direction. -...

Pupil outcome: I can investigate how changing the angle of a mirror affects the angle of reflected light. Key learning points: - If you change the angle that light hits a surface, the angle of reflection will also change. - Mirrors are...