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Videos (458) | Sift Talk (16) | Blogs (56) | Comments (1000) |
Videos (458) | Sift Talk (16) | Blogs (56) | Comments (1000) |
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Timelapse Sisyphus 1
Amazing! I want to see the inner workings, but that is some *quality art/engineering right there. The description said it's like a Spiro graph that uses steel balls, magnets, and sand, but how does it switch patterns?
Bruce Shapiro's works are really interesting.
*promote
tiny origami robot by MIT
not a robot then, it really is origami with a tiny magnet, moved my coils around it.
lame!
The Thug Life Chose Me
I call fake, he's clearly got some kind of magnetic machine that pulls objects towards him, and he's just playing it back in reverse. =)
BB-8 droid from The Force Awakens Rolls out on stage
I agree that the inside of the ball probably resembles a weighted arm with servo-driven rollers that can move the ball around on one end (likely the bottom) and an articulated arm on the other that has magnets that keep the head from falling off and can move it around on the ball. The head itself could be largely passive, with no ability to "move" itself.
BB-8 droid from The Force Awakens Rolls out on stage
I think the head is magnetically attracted to the ball with some powerful neo magnets, and the head has enough gyros and wheels to drive around on the ball.
I think the bottom ball has spinning gyros as well used to propel it.
BB-8 droid from The Force Awakens Rolls out on stage
Grahamslam's hamsterwheel is most likely.
Head has caster wheels and 2-3 (or more) magnets.
Body has basically a R/C car that can move sideways, and a gimbal mounted array of similar magnets to the head.
The R/C car moves everything, the gimbal moves the head. Doesn't need any segway tech, just a big weight at the bottom.
BB-8 droid from The Force Awakens Rolls out on stage
It occurs to me you could probably manage it without too much in the way of Segway-esque magic. Have the outer shell as you'd expect, basically a big hamster ball, then a second ball inside it with all the clever stuff.
For the inside inside have most of the lower half be ballast of some sort - battery packs would be ideal for that - then 8 or so wheels pushing against the outer shell so you can move in a decent number of directions (might have to retract the wheels perpendicular to the direction of movement unless there's a more elegant solution I'm missing).
Then finally for the upper half make a very smooth dome, put a little cart on it whose position you can adjust with a couple of cables, stick a couple of strong magnets on the cart (need a motor on the cart too so you can rotate the head).
This is all based on my years of not having done anything remotely connected to model building!
BB-8 droid from The Force Awakens Rolls out on stage
Magnets - how do they work?
*promote the *engineering!
Pull my finger! Scientists solve knuckle-cracking riddle
Not quite, he (Donald L. Unger) won an Ig Nobel prize, a satirical version of the Nobel prize, given to "honor achievements that first make people laugh, and then make them think". Basically anything that sounds way too silly but can still yield useful knowledge.
While silly, it's still (usually) all based on proper scientific method, and there's even an example of a man who first won the Ig Nobel prize in physics in 2000 (for levitating a frog with magnets), and then later went to win the Nobel prize in physics together with Konstantin Novoselov for their work on graphene. =)
I believe someone won a Nobel prize for spending several decades of his life cracking the knuckles of one hand and just that one hand every day to see if there are really any negative effects from knuckle-cracking.
In his case there weren't.
Hummingbirds - How do they Work?
Cool! Now what about magnets?
Spinning A Top In A Vacuum Chamber
What about a superconducting magnet being used to suspend a top, both in a vacuum and not?
Similar to this - which is smooth shell/continuous cross section but sadly very short in duration.
Heads or Tales?
Looks (and sounds) like a magnetic Scotch & Soda set
Cellphone Has Incredible Effect on Magnetic Ore
at 1:21 you can see the table move under the ore as he moves the magnet around.
Cellphone Has Incredible Effect on Magnetic Ore
If this wasn't fake, there would be magnetic golems wandering the now desolate wasteland of earth. We would all know the sting of the magnet golem. It would be common place. Your children would walk to school with anti magnet guns and ironic, perhaps rebellious ICP t-shirts.
blackfox42 (Member Profile)
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