The film’s story centers on the idea that in the grand scheme of the universe, nothing is ever wasted and it finds comfort in us all essentially being Stardust ourselves. Voyager represents the memories of our loved ones and lives that will never disappear.
In this experiment I will show you what convection currents are and how they work. don’t forget to check out my other videos and visit www.sciencebang.co.uk
Taking a photo of the sun with a standard camera will provide a familiar image: a yellowish, featureless disk, perhaps colored a bit more red when near the horizon since the light must travel through more of Earth’s atmosphere and consequently loses blue wavelengths before getting to the camera’s lens. The sun, in fact, emits light in all colors, but since yellow is the brightest wavelength from the sun, that is the color we see with our naked eye — which the camera represents, since one should never look directly at the sun. When all the visible colors are summed together, scientists call this “white light.”
If you choose the scale that the Earth was the size of a pea, than Jupiter would be in a distance of over 300 meters, and Pluto – about 2,5 km from us (and would be the size of a bacteria so you wouldn’t even see it). The closest star – Proxima Centauri, the closest star (4 light years) would be 16 000 km from us.
Scientists are being inspired by nature to design the next generation of security devices. Arrays of nanoscale holes create beautiful reflected colours that are almost impossible to forge. This video was supported by TechNyou – check out their series on logical fallacies: http://bit.ly/WBsD31 Soon these nanoscale security devices could replace holograms. They are many times [...]
To learn more about this material, go to http://cenm.ag/hydrogels. Nature can do a lot of spectacular things. But some researchers are designing materials that go beyond what Mother Earth is capable of. These substances are called metamaterials. Now, scientists from Cornell University have designed a new metamaterial called a DNA hydrogel that can collapse into [...]
Brought to you by MconneX (http://www.engin.umich.edu/alumni) A nanoscale coating that’s at least 95 percent air repels the broadest range of liquids of any material in its class, causing them to bounce off the treated surface, according to the University of Michigan engineering researchers who developed it. In addition to super stain-resistant clothes, the coating could [...]
Can we accurately describe light as exclusively a wave or just a particle? Are the two mutually exclusive? In this third part of his series on light and color, Colm Kelleher discusses wave-particle duality and its relationship to how we see light and, therefore, color. Lesson by Colm Kelleher, animation by Nelson Diaz.
The “Potsdam Gravity potato”, as this image of terrestrial gravity has become known, can for the first time display gravity variations that change with time. The seasonal fluctuations of the water balance of continents or melting or growing ice masses, i.e. climate-related variables, are now included in the modeling of the gravity field. This new [...]
In keeping with the theme of TED2008, professor Stephen Hawking asks some Big Questions about our universe — How did the universe begin? How did life begin? Are we alone? — and discusses how we might go about answering them.
Heisenberg’s uncertainty principle tells us that it is impossible to simultaneously measure the position and momentum of a particle with infinite precision. In our everyday lives we virtually never come up against this limit, hence why it seems peculiar. In this experiment a laser is shone through a narrow slit onto a screen. As the [...]
An international team of astronomers, led by David Sobral from Leinden University of the Netherlands used three telescopes located across the globe to study the trends in star formation, from the earliest stars that made up the first galaxies in the universe, up until now. Their findings suggests something quite shocking .. almost 95% [...]
Some of you may recall an article I wrote previously, about a theory that was proposed that said time isn’t an absolute part of the spacetime continuum, or the “fourth dimension,” which it is frequently referred to as — and that the natural world can better be described by removing that part of the equation and [...]