Tag Archives | Light

Scientists Develop Real-Life Tractor Beam

tractorbeamsAustralian scientists have built device that generates a tractor beam, commonly considered a  figment of alien abduction scenarios and Star Trek. The researchers’ creation thus far is capable of transporting small objects distances of up to five feet, using only a beam of light, Popular Science reports:

Using only light, Australian researchers say they are able to move small particles almost five feet through the air. It’s more than 100 times the distance achieved by existing optical “tweezers,” the researchers say.

Not quite a simple grabby tractor beam, the new system works by shining a hollow laser beam at an object and taking advantage of air-temperature differences to move it around.

It works by shining a hollow laser beam around small glass particles, as Inside Science explains. The air around the particle heats up, but the hollow center of the beam stays cool. The heated air molecules keep the object balanced in the dark center.

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Are Humans Really Beings Of Light?


Dan Eden for viewzone.com (at mondovista.com):

I get lots of suggestions for stories, and I really appreciate them. But some of them are too good to be true. An example of this was a story of a giant human skeleton — maybe 40 feet tall — that was discovered by a Russian archaeological team. The story had photos and links accompanying it and looked promising. But when the links were researched they went in a circle. Each link used the other link as the source. Finally the elements of the photos turned up and we recognized a good Photoshop job had fooled everyone.

I had this same experience this week when I was sent an article where a Russian (again) scientist, Pjotr Garjajev, had managed to intercept communication from a DNA molecule in the form of ultraviolet photons — light! What’s more, he claimed to have captured this communication from one organism (a frog embryo) with a laser beam and then transmitted it to another organisms DNA (a salamander embryo), causing the latter embryo to develop into a frog!

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