This Device Turns Anything into a Suction Cup

Finaly I know what my downstairs neighbour is doing at 3 am.

“Why not use a child? They don’t weigh as much and their bones aren’t as brittle!” Okay, that legitimately made me laugh out loud. Thanks!

I like that Vibrating something fast enough always makes something interesting happen, it sticks, it repels, it explodes, always something interesting.

The American psycho reference is hilarious hahah im hooked

Apply the tech to shoes and we can all dance on the ceiling. Oh, what a feeling!

The reading of "going to find out if it kills me" is great! lol.

Steve mould suit version is terrifying. I can see him covering up an oil spill.

I can't believe Bryce preferers VanPatten's card to mine... The sponsor is BlueDot: take your first course today: /stevemould

"don't try this at home" Me who in fact does not possess any metal working skills, an anvil, large planks of wood, or a buttkicker™: "well there goes my plans"

Bernoulli Gripper creates suction by blowing. Well it turns out I've known SEVERAL Bernoulli Grippers in my time.

"... and that's how the Bernoulli gripper produces suction" sounds like the nerdiest euphemism I've ever heard.

11:34 - Professional downstairs neighbor activities

Who would've thought that you can get a brick up using vibration

0:12 Seriously the greatest thrown card trick in history. 😂

Me: *grab the plates* *SOMEONE GRAB THE PLATES* *YO*

I don't know how you find all these crazy wacky yet scientific ideas. Brilliant as usual.

I think the explanation around 1:54–2:50 contains several separate problems. 1 the statement that the extra bulk kinetic energy is “stolen from” the random molecular motion is not generally true. A fluid element is not an isolated system with a fixed amount of kinetic energy. Pressure forces can do work on it and change its bulk kinetic energy, just as an ordinary object gains kinetic energy when a force acts through a distance. If random molecular motion really decreased substantially, that would correspond to cooling of the gas. Ordinary incompressible Bernoulli flow does not require that. 2 saying “the air moves faster, therefore the pressure drops” is itself incomplete. Bernoulli’s equation gives a relation between pressure and velocity along a streamline; it is not, by itself, a microscopic causal mechanism saying that velocity somehow destroys pressure. Locally, pressure gradients exert forces and accelerate or decelerate the fluid. Globally, the pressure and velocity fields are determined together by the geometry, boundary conditions and fluid equations. There is also a streamline issue here which is easy to overlook. In its usual incompressible form, Bernoulli’s equation relates points along the same streamline unless you make the additional assumption of irrotational flow. So one cannot simply compare the pressure at any two convenient locations in the picture and say “the velocity is larger here, therefore the pressure must be lower here”. In particular, the low pressure in the gap and the atmospheric pressure acting elsewhere on the object are not necessarily points on the same streamline. For a Bernoulli gripper there is actually a much cleaner macroscopic explanation that avoids this problem. After the air enters the thin gap, it spreads radially outwards. The available flow area increases with radius, so the air is fastest near the centre and slows down as it moves outwards. Since the outward-moving air is decelerating, there must be a force directed back towards the centre. That requires the pressure to increase towards the outside. [basically bernoullis equation on one stream line] Now we have a genuine boundary condition: at the outer edge of the gap, the air actually exhausts into the surrounding atmosphere, so the pressure there approaches atmospheric pressure. Following the radial flow inward along the gap, the pressure must therefore be lower than atmospheric. That gives the suction without comparing two unrelated points using Bernoulli. We first determine the pressure distribution within the radial flow, where the streamline argument makes sense, and then compare the resulting gap pressure with the atmospheric pressure on the other side of the object simply to calculate the net force. No Bernoulli equation is being applied between those two sides. This also avoids the apparent circular statement “low pressure causes high speed, but high speed causes low pressure”. The nozzle–plate geometry, inlet conditions and atmospheric outlet determine a pressure field and velocity field that satisfy continuity and Newton’s laws simultaneously. Locally, the pressure gradient is what supplies the force responsible for acceleration or deceleration. 3 the molecular-collision picture is not needed to explain Bernoulli’s equation at all. Bernoulli is fundamentally a continuum result derived from the fluid equations. A microscopic explanation depends on whether the fluid is a dilute gas or a liquid, whether it is compressible, temperature changes, viscosity etc. Trying to force one “hard sphere molecules collide less because they are moving faster in bulk” story onto all of these cases is misleading.

Now you have to make it into spy wall climbing suction cups like every child wanted

0:37 exciting!

Very cool video - I had no idea this effect was a thing! And thanks for the shout-out.