Himba tribe colour experiment

Thu, 23 Feb 2012 19:19:28 +0000

Human Bird

Thu, 23 Feb 2012 19:19:28 +0000

Jeb Corliss, a professional basejumper and wingsuit proximity flyer, jumped from a helicopter and flew within a few feet of The Matterhorn, gliding along its edge. He was able to reach speeds of over 300 km/h, flying, at times, within a metre of the rocky edge of the mountain.

Eureka! Episode 30 - Radiation Spectrum

Wed, 08 Feb 2012 01:50:05 +0000

Viewers learn that the waves of heat energy radiated by the sun come in many forms, which together make a band, or spectrum, of energy waves

Eureka! Episode 28 - Heat as Energy

Wed, 08 Feb 2012 01:50:05 +0000

Heat is produced whenever there is movement and friction between two objects. Since movement is a form of energy, it follows that heat must also be a form of energy.

Eureka! Episode 4 - Acceleration Part I

Wed, 16 Nov 2011 14:21:16 +0000

With the examples of a bicycle and a baseball player, an important rule of physics becomes apparent. Concept: Force = mass x acceleration.

Eureka! Episode 27 - Convection

Wed, 16 Nov 2011 14:21:03 +0000

This program explains how the principle of buoyancy is responsible for the process of heat transfer called convection.

Eureka! Episode 26 - Buoyancy

Wed, 16 Nov 2011 14:20:58 +0000

Showing viewers that objects immersed in a liquid are buoyed up by a force equal to the weight of the liquid displaced, this program explains the principle of buoyancy.

Eureka! Episode 25 - Volume & Density

Wed, 16 Nov 2011 14:20:53 +0000

This program explains that volume refers to the amount of space an object envelops and that density refers to the amount of mass that is compacted in a given volume.

Eureka! Episode 5 - Acceleration Part II

Wed, 16 Nov 2011 14:20:46 +0000

An animated locomotive helps explain how acceleration works and is calculated. The importance of reasonable units is stressed.

Eureka! Episode 23 - Electrons

Wed, 16 Nov 2011 14:20:43 +0000

Using an animated model of an atom, Eureka! illustrates how electrons whiz so quickly round the nucleus that they appear to form layers.

Eureka! Episode 22 - Atoms

Wed, 16 Nov 2011 14:20:31 +0000

This program explains that molecules are made up of atoms. In pure metals, all the atoms are arranged separately in a lattice-work pattern, but in most non-metals, liquids, and gases, the atoms are bunched together intomolecules.

Eureka! Episode 21 - Temperature vs. Heat

Wed, 16 Nov 2011 14:20:28 +0000

Eureka! explains that heat refers to quantity of hotness, and is determined by the mass and speed of molecules.

Eureka! Episode 20 - Measuring Temperature

Wed, 16 Nov 2011 14:20:26 +0000

Eureka! shows viewers how Swedish scientist Anders Celsius invented the Celsius thermometer, using the expansion of mercury as a measure of temperature.

Eureka! Episode 19 - Expansion and Contraction

Wed, 16 Nov 2011 14:20:23 +0000

Using balloons to illustrate the process, Eureka! shows how, when matter gets hot, its molecules go faster and the solid, liquid, or gas expands.

Eureka! Episode 18 - Evaporation and Condensation

Wed, 16 Nov 2011 14:20:19 +0000

A goldfish bowl filled with water demonstrates the process of evaporation, in which speeding molecules escape from a liquid to form a gas.

Eureka! Episode 17 - Molecules in Liquid

Wed, 16 Nov 2011 14:20:12 +0000

As molecules in a solid get hotter, they vibrate faster and faster and eventually slip out of their lattice-work pattern. When this occurs, the substance melts, changing from a solid to a liquid state.

Eureka! Episode 16 - Molecules in Solids

Wed, 16 Nov 2011 14:20:09 +0000

This program defines the three states of matter, and illustrates the lattice-work pattern of molecules in solids. Viewers learn the origin of the word "molecule."

Eureka! Episode 15 - The Pulley

Wed, 16 Nov 2011 14:20:06 +0000

Eureka! shows viewers how a pulley works to lift a heavy object.

Eureka! Episode 14 - The Screw and The Wheel

Wed, 16 Nov 2011 14:20:02 +0000

This program provides examples and definitions of a screw and a wheel; a screw is simply a twisted inclined plane; a wheel is simply a circular lever, whose fulcrum has become an axle.

Eureka! Episode 13 - Mechanical Advantage and Friction

Wed, 16 Nov 2011 14:19:58 +0000

Professors A and B compare the mechanical advantage of an inclined plane with that of a lever.

Eureka! Episode 12 - The Lever

Wed, 16 Nov 2011 14:19:53 +0000

Eureka! demonstrates the principle of the lever: "The longer the arm of the lever to which force is applied, the less that force need be."

Eureka! Episode 11 - The Inclined Plane

Wed, 16 Nov 2011 14:19:50 +0000

This program demonstrates how an inclined plane allows you to trade increased distance for decreased force

Eureka! Episode 10 - Potential Energy

Wed, 16 Nov 2011 14:19:47 +0000

A rock teetering on the edge of a cliff is shown to have potential energy - the energy of position.

Eureka! Episode 9 - Kinetic Energy

Wed, 16 Nov 2011 14:19:44 +0000

Animated billiard balls help demonstrate kinetic energy - the energy of motion.

Eureka! Episode 8 - Work

Wed, 16 Nov 2011 14:19:41 +0000

A circus strongman and a clown help present the physics definition of work. Concept: Work = force x distance.

Eureka! Episode 7 - Weight vs. Mass

Wed, 16 Nov 2011 14:19:31 +0000

Eureka! explains the difference between weight and mass, and shows how only mass is the same on the moon and on the earth.

Eureka! Episode 6 - Gravity

Wed, 16 Nov 2011 14:19:28 +0000

Isaac Newton's celebrated falling apple is cited to explain the force of gravity and the unit with which the force of gravity is measured. Concept: Force of gravity = mass x 10m/s2

Eureka! Episode 3 - Speed

Wed, 16 Nov 2011 14:19:25 +0000

The concept of speed is introduced to the inertia-mass relationship. Concept: Force varies with mass and rate of change of speed

Eureka! Episode 2 - Mass

Wed, 16 Nov 2011 14:19:21 +0000

Building on the concept of inertia, Eureka! adds the factor of mass, tells how it's measured, and shows how it differs from size.

Eureka! Episode 29 - Radiation Waves

Thu, 10 Nov 2011 07:56:49 +0000

Viewers learn that one of the chief ways in which heat energy moves is in the form of waves. This kind of heat transfer is called radiation.

Nuclear Chain Reaction with Balls :: Physikshow Uni Bonn

Mon, 20 Jun 2011 09:59:07 +0000

We present a table tennis ball model for a nuclear chain reaction (in coordination with the "Sendung mit der Maus") at the Physikshow (Physics Show) of the University of Bonn!!

Mousetrap reactor (side view slow motion)

Mon, 20 Jun 2011 09:58:47 +0000

a physics experiment where it simulates nuclear fission. 100 mousetraps with 100 balls are set off in an enclosed area by one ball.

Nuclear Fission

Mon, 20 Jun 2011 09:20:01 +0000

Nuclear Fission caused by a neutron. Fission is the splitting of atomic nuclei; two nuclei are formed from one.

Weird Tape Effect

Thu, 12 May 2011 12:37:47 +0000

So where I work I have about a 12" frosted glass barrier on top of my counter for privacy reasons. I found out today that a simple piece of scotch tape will make the opaque glass clear?

Crushed Can Demo

Sun, 08 May 2011 06:13:57 +0000

This is one of my favourite physics demonstrations - it shows the enormous forces that can be exerted by the atmosphere. Unless you're a trained physicist, please don't try this at home - this is a potentially dangerous demo if you don't know what you are doing.

Wonders of the Universe - Messengers 4/4

Tue, 26 Apr 2011 08:15:18 +0000

In the last episode of Professor Brian Cox's epic journey across the universe, he travels from the fossils of the Burgess Shale to the sands of the oldest desert in the world to show how light holds the key to our understanding of the whole universe, including our own deepest origins. To understand how light holds the key to the story of the universe, you first have to understand its peculiar properties.

Wonders of the Universe - Messengers 3/4

Tue, 26 Apr 2011 08:15:16 +0000

Wonders of the Universe - Messengers 2/4

Tue, 26 Apr 2011 08:15:14 +0000

Wonders of the Universe - Messengers 1/4

Tue, 26 Apr 2011 08:15:11 +0000

Wonders of the Universe - Stardust 4/4

Tue, 26 Apr 2011 06:27:37 +0000

In the second stop in his exploration of the wonders of the universe, Professor Brian Cox goes in search of humanity's very essence to answer the biggest questions of all: what are we? And where do we come from?

Wonders of the Universe - Stardust 3/4

Tue, 26 Apr 2011 06:27:33 +0000

Wonders of the Universe - Stardust 2/4

Tue, 26 Apr 2011 06:27:30 +0000

Wonders of the Universe - Stardust 1/4

Tue, 26 Apr 2011 06:27:27 +0000

Mythbusters - Soccer Ball Shot from Truck

Thu, 13 Jan 2011 13:04:43 +0000

Eureka! Episode 24 - Conduction

Thu, 11 Nov 2010 11:14:28 +0000

Eureka! looks at the process of conduction, explaining that the application of heat to an object makes the molecules or atoms vibrate faster and cause a sort of "domino effect."

Sniper Rifle Recoils Are No Joke

Sun, 24 Oct 2010 07:32:56 +0000

This shooter's eyesocket is no match for the power of his gun, not even with those sweet glasses. Follow us on StumbleUpon for more of our favorite web finds: http://brk.to/BreakytStumble Upload your fail videos to Break and get paid: http://brk.to/uploadtobreakyt

Double Pendulum -- kettős inga

Sun, 24 Oct 2010 07:32:17 +0000

Cheap and gripping demonstration of chaotic behavior (Univ. Sydney, School of Physics, ground floor corridor)

Slow Motion Video of Lightning

Sun, 24 Oct 2010 07:27:36 +0000

High speed video of lightning filmed at 7,200 images per second. Video shows a stepped leader with many leader channels followed by a single return stroke, continuing current and M-components.

Ultraviolet Crab Spider

Sun, 24 Oct 2010 06:34:47 +0000

A crab spider (misumena vatia) uses ultraviolet (UV) light to attract bees to certain flowers, from which it makes it ambush. Rather than being camouflaged, its UV patch actually shines as a beacon to the bees, thanks to their ability to see UV light (where humans cannot).

Thumbprint of God?

Fri, 02 Apr 2010 12:44:46 +0000

Clip from BBC Secret Life of Chaos with Jim Al-Khalili. Here he gives us a tour of the Mandelbrot Set, which, as he says, has been described as being the "Thumbprint of God".

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