search results matching tag: Wooden

» channel: learn

go advanced with your query
Search took 0.000 seconds

    Videos (194)     Sift Talk (4)     Blogs (23)     Comments (361)   

Solving By Using 'Extreme Case' Puzzles With Physics Girl

Barbar says...

Wouldn't it tilt towards the wooden block (meaning indicate the wooden block was heavier) since bouyancy would have contributed more to the larger wooden block?

On the other hand she states they have identical mass (not weight), so in a vacuum they should register even.

Stormsinger said:

Problem 1: The scale will tilt towards the lead block. It's the same principle as Archimedes, except using air instead of water. When there is air, there is a buoyant force exerted on any object immersed in it. Remove the air, and the weight of the object goes up, by the weight of the same volume of air.

Problem 2: 20*pi meters. I'm not sure how extreme physics is involved in this one at all. It's trivially derived from the definition of circumference.

EPIC FAIL! Twitch Live Streamer Accidentally Burns His House

Wood burning with electricity

AeroMechanical says...

I was unfortunately surprised to learn that my butcher block home workbench, or more likely the varnish (looks like polyurethane to me) in many spots has a very low resistance (<0.5 ohm/in as I measure). Fried a PCB I was working on, which I took a lot of shit for, everyone assuming I'd just done something stupid. Anyways, the moral is don't assume your wooden bench is actually an insulator.

Oh, and I also don't recommend playing with a a transformer out of a microwave unless you really know what you're doing. Though it's probably safe enough, 2kV will arc pretty far through air, so you don't even have to actually touch it to have a bad day.

Guilty!

Protecting and serving with man's best friend

Mordhaus jokingly says...

Clearly he was armed with the intent to kill some officers. The officer was only protecting himself by staying back and releasing the dog, because invisible knives are a thing. Then they carefully handled the suspect because they totally cared that he was in shock, including a complimentary wooden chair drop to the face which led to another wound.

Kudos to these outstanding officers for taking this dangerous criminal off the street. Santa doesn't like it when you burn his trees.

The Bucket Board

AeroMechanical says...

I'm guessing they would be terminally lacking in pop. That might not be the case if they were pre-stressed when the layers were bonded together though. I really like the look of those wooden cabinet-looking ones.

They're really pushing it with all the self congratulations on being such do gooders, though. It's a nice idea but a pretty thin concept in practice. I hardly see the cost of the deck material being significant when it comes to hand made skateboards. Plywood isn't exactly expensive.

arborist finds giant bee hive

poolcleaner says...

I rescued a wooden box full of honey bees that was just dumped into a park field. I don't know how long they had been there, but had been there long enough to create a second, underground hive, just slightly elevated in a hill. There was a nature center about a mile away on the more domesticated side of the park, so I just let them know and they moved it to a better location.

newtboy said:

I'm disappointed in him.
Bees are in trouble. We're in trouble without bees. Don't go killing bee hives because they're a minor inconvenience to you, please.

He saw there was a hive in the tree before he cut it, no way around that, the bees were flying in and out right in his face. I can't figure out why he didn't -1)put on a bee suit 2) use some smoke to calm them 3) wait for a cooler time of day when they're calm to do the cutting and/or 4) (best idea) call a local bee keeper to come remove them. You can almost always get one to come for free if it's really bees and not wasps or hornets, most extermination companies will know at least one.

Also, it seemed he cut right through the hive without any effort to keep it intact. That was a guarantee of an angry swarm (how would you react to a chain saw cutting your home in half?) and a likely hood that the entire colony will die. He really should have knocked on it to find the hollow part and made the cut lower and used rope to lower the entire hive.

My first bee hive was just such a hive that someone properly cut out of their tree in one piece, and it lasted me years before the chunk of wood rotted and they swarmed. I didn't even have a suit when I got it, so I just went at sunrise to collect it, and hardly lost a bee and didn't get stung moving it about 40 miles!

This hive could have been saved with minimal effort and way fewer stings, so in a way I'm glad he got the instant karma for destroying it, but I'm still sad that saving the bees is apparently not on most people's minds, not even arborists.

DON'T KILL BEES PEOPLE. Without them we'll starve.

Zawash (Member Profile)

newtboy (Member Profile)

Powerless Automatic Wooden Gullwing Gate

newtboy (Member Profile)

Ronda Rousey breaks Web Host's Ribs

kulpims says...

fuckinbg psycho Rousey, wtf was she thinking. this is not tatami, it's hard wooden floor, you steroid gulping bitch. I hope she gets knocked the fuck out in the octagon, soon

A New Level Of Archery Skills

Drachen_Jager says...

Okay... but with that 2 pound draw bow, where are any of these skills useful outside of LARPing?

I mean, all he needs is a friend with a tinfoil covered wooden sword, and another with a funny hat, shouting, "Lightning bolt! Lightning bolt! Lightning bolt!" for this to be complete.

star wars prequel-nostalgia critic gets owned by Mr plinkett

00Scud00 says...

I must be the only one who found both of these people to be kind of annoying, in one corner we have Cynical Nerd and in the other we have Upbeat Nerd, what better pairing for a YouTube deathmatch.
I thought the lightsaber fights in both trilogies were fine, they were just following different models, I thought the acrobatics of the newer films was fun to watch. And why bother making everyone pretend that they're swinging around claymores when both the film makers and the audience know those energy blades probably weigh next to nothing?
I always kind of assumed the wooden acting (especially with the Jedi) came from Luca's directing, I imagine he was shooting for a kind of Zen sense of cool but didn't manage to find the right balance.
And I'll never understand why some people hate CG so much, it's a tool that can be used well or poorly, just like models and miniatures and fully built sets. But from the way some people talk about it you'd think life before CG was all some kind of golden age where everything was perfect.

SFOGuy (Member Profile)



Send this Article to a Friend



Separate multiple emails with a comma (,); limit 5 recipients






Your email has been sent successfully!

Manage this Video in Your Playlists

Beggar's Canyon