Unlike Earth, our Sun is a giant ball of mostly hydrogen and helium. Astronomers managed to figure that one out roughly 100 years ago. But after all this time, they still can't come to an agreement on what "mostly" means, precisely.

Hanging out in the trees of Central and South America are some frogs with pretty unusual coloration. Which is to say, parts of them have no color at all. Their bellies are completely see-through!

Scientists have created beams of light that are slower than a car! Not only that, but with the literal flick of a switch, they can freeze that beam of light in place!

Hanging out in the trees of Central and South America are some frogs with pretty unusual coloration. Which is to say, parts of them have no color at all. Their bellies are completely see-through!

Howcast - Learn how to do a marble manicure from Spa Taxi owner Danielle Corbin Jaime in this Howcast nail tutorial.

Howcast - Learn how to do a French manicure using regular tape from Spa Taxi owner Danielle Corbin Jaime in this Howcast nail tutorial.

Howcast -Learn how to apply foundation with an airbrush in this Howcast video featuring Dinair Airbrush Makeup System instructor Julie Tobias.

Cover your windows and add color and flair to any room in your house by buying new curtains.

Pupil outcome: I can name transparent and opaque materials and talk about how they are useful. Key learning points: - The results of an investigation can tell us which materials are transparent and opaque. - Materials can be sorted into...

Pupil outcome: I can plan and do an investigation to find out about transparent and opaque materials. Key learning points: - Some materials let all light pass through, these are called transparent materials and you can see through them...

A montage of clips showing a variety of shadows demonstrates that shadows are created by opaque objects.
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Physical processes - L
i

ght - Shadows />

Learning Points
Shadows are created when
a

n...

Learn that shadows change size as the angle of a light source changes.
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Physical processes -L
i

ght - Shadows />

Learning Points
The length of a shadow can change
w

ith the angle of the light...

Six different objects are shown, three of them are opaque ... can you spot which ones?
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Physical processes - L
i

ght - Shadows />

Learning Points
Opaque ob
j

ects do not let any light...

Find out how shadows are formed and what types of materials produce shadows.
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br/>

Physical processes - L
i

ght - Shadows />

Learning Points
Shadows are created when
a

n object blocks the...

Investigate why shadows change size during the day.
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Physical processes - Light - The Sun as
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light source />

Learning Points
Shadows change size during the day b
e

cause of the position...

This video covers:

- Why objects appear the colour th
ey do
- What happens when light is absorbed, reflected and tr
ansmitted
- What makes objects appear opaque, transparent an
d translucent
- How

colour...

“Opaque versus Transparent” gives observations about how light interacts with opaque and transparent objects.

An explanation of how light passes through transparent, translucent and opaque objects. The science is told in an imaginative way using cutting-edge technology through the character of Leia Light - an individual who has the superpower to...

Join us in this MightyOwl video and learn all about light. Natural light, like the sun, provides us with light so that we can see in the daytime. At night, when there is no sun, we can use manmade light like flashlights and lamps to be...

The colored transparent and opaque objects

This video examines the various uses of light and the role of different types of lenses in light refraction. The way in which eyeglasses, contact lenses, and binoculars manipulate light to allow us to see better is illustrated. Other...

Using two blocks of dry ice, Prof Hal Sosabowski demonstrates how magnesium is so reactive that it can cause carbon dioxide to act as an oxidant. The result is a beautiful instense glow inside the blocks. This experiment is one of the...

The connections between neurons in the brain are involved in everything we do, and no one's pattern is the same. Imagine the medical breakthroughs if we understood more about the brain's circuitry, but a milky opaque tissue that coats...

CREDITS Animation & Design: Jean-Pierre Louw Narration: Dale Bennett Script: Alistair Haynes Light is a form of radiation that travels as a transverse wave. Light behaves in various different ways. It can be refracted and reflected. For...