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Microscale Rockets

Each one of these microscopic cylindrical tubes is roughly 10 microns in length and chemically propelled like a space-faring rocket. They draw in fuel from the surrounding environment, which reacts with the catalysts coating the interior to produce gases (oxygen). These resulting gases bubble out the rear of the microrocket, creating thrust capable of propelling the tubes at more than 1000 body-lengths/second.

Researchers have already demonstrated the ability to haul cargo with these tiny rockets and hope to one day use them to precisely deliver drugs and isolate cancer cells.


#ScienceGIF #Science #GIF #Nanoscience #Microscopic #Nanometer #Micrometer #Rocket #Chemical #Reaction #Propulsion #Load #Bubbles #Nanotechnology #Fabrication
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Learn Morse code with a few rules. Handy if you are ever trapped in a submarine or need to talk through the walls of a Turkish prison.
That's Morse Code! They're Still Alive!

Unicode is (or should be) the single encoding for the transmission of all of the world's text. But Hollywood teaches us that when all else fails, our very survival may depend on our knowledge of Morse Code. Samuel Morse was a portrait painter with an interest in electricity. He designed his telegraph code so that the most frequent characters would require the least time to transmit, so it was not only a character encoding, it was also a data compression algorithm.

Morse code is a useful thing to know in case you are ever trapped in a submarine, or in a mine, or on a starship, and you need to communicate with your rescuers or the rebel fleet. Having to learn 26 things is hard, especially when motivated by such an unlikely contingency, so some mnemonic assistance is desired.

You should already know V (for Victory!) from the opening movement of Beethoven's Fifth.

  V is dot dot dot dash.

You know S and O from the SOS distress signal.

  S is dot dot dot.
  O is dash dash dash.

That knocks the number of things we have to learn down to 23.

There is the frequency clue. The most frequently used letters in English have short and simple Morse encodings, so

 E is dot.
 I is dot dot.
 T is dash.
 M is dash dash.

That knocks the number of things we have to learn down to 19, which is still a huge number. You could hope to save the day with 7 letters, but I think it is pretty unlikely.

So let's translate the remaining codes into words, where a dot becomes a vowel, and a dash becomes a consonant. We will form words that include the letter that the word represents.  

 A is AM dot dash
 B is BEAU  dash dot dot dot
 C is COCO  dash dot dash dot
 D is DIE  dash dot dot
 F is OOFY  dot dot dash dot (that's right, oofy)
 G is GNU  dash dash dot
 K is KIT  dash dot dash
 L is ALOE  dot dash dot dot
 N is NO  dash dot
 P is EXPO  dot dash dash dot
 R is ORE  dot dash dot
 U is OUT  dot dot dash
 W is OWL  dot dash dash
 Y is YUCK dash dot dash dash

 Think of the 4H club and their advisor, Mister 4H himself: Harry Herbert Hoover Heever.

H is dot dot dot dot.

That leaves the four lousy letters J, Q, X, and Z.

 J is IJJJ  dot dash dash dash
 Q is QQUQ  dash dash dot dash
 X is XOOX  dash dot dot dash
 Z is ZZOO  dash dash dot dot

Don't ever forget this. The fate of the galaxy may depend on it.

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If you own it you should be able to fix it. But, some manufacturers (like Apple) go out of their way to make their products downright hostile to 3rd party repair even bricking your phone if you use an unauthorized repair technician. We could fix this with legislation (already in some states) that tells manufacturers "I paid $$$ for this device, thank you very much. So, you don't get to control what I do with it."

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The L.A. Times says that 81-year old Dick Van Dyke (of Mary Poppins and TV fame) is actually a closet 3D FX fan and hobbyist. He bought an Amiga Toaster back in the day and still messes around on his home computer with modifying 3D models of himself and animating them, although "the tough stuff is really smoke, water and fog. I'm forever working on my water effects."

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Hear the original voice synthesizer from the 1939 World's Fair. Because it predated most digital technology, it was an incredibly manual "instrument" that required a skilled operator a year to learn.

Still, Voder could mimic inflection and even singing. It also evolved into a weapon of war (helping with the Manhattan Project) and, much later, added its voice to popular music, like the Beastie Boys' Intergalactic.

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Changed to a major key, Darth Vader's theme sounds, I swear,  like a jubilant wedding march. You want to throw flowers and blow kisses. Very sweet.+Jonathan Scoggins 

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Been watching some HTC Vive Virtual Reality headset demos. This stuff is really getting real w/ a great frame rate (90fps), HD resolution and wide field-of-view. But, the Portal immersion demo at the end of this guys video really sold it to me.

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One windy day in December, windmills in Texas generated nearly 40 percent of the state's power.

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This inventor makes no claims of perpetual motion but his micro-amp motor/generators are sure dancing on the edge of zero. If you blow on this one with a straw, it actually charges up.

The inventor also has a soup-can-sized 3D printed "AtmoMotor" design that runs off of static charges. Bring a balloon nearby and it spins. Or, run it "wirelessly" from a small Tesla coil.

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