search results matching tag: arc

» channel: learn

go advanced with your query
Search took 0.000 seconds

    Videos (348)     Sift Talk (6)     Blogs (11)     Comments (361)   

Lightning captured at 7,207 images per second

spoco2 says...

>> ^messenger:

Can anyone explain what's happening here? Looks like the lightning is sending out feelers for the earth, and when it finds it, everybody else quits looking.


That's exactly what happens, a whole bunch of arcs of electricity fan out looking for earth (called leaders). Positively charged streamers can also start rising from points on the earth. When a connection is made between sky and earth that becomes the path of least resistance and the main force of electricity passes through that, which is the main lightning bolt we actually see.

Make me laugh, get Torchlight 2 (Blog Entry by campionidelmondo)

probie says...

A drunk walks into an upscale pub and, after a while, leans up against the bar.
"A snifter of Louis XIII," he slurs and drops three $100 bills on the bar.
The bartender, taken aback for a moment, looks the disheveled man up and down.
"Big spender!" the bartender says, pouring his drink.
"Life is good," the drunk replies, and promptly tosses back the cognac.
The bartender takes a second look at the man; his hair is a mess and his suit hasn't seen a dry cleaner in a while, and he swears the man smells faintly of urine. Hardly someone who can afford such a fine cognac.
"Inheritance?" the bartender presses.
The man looks up.
"No, no...I bet people. And I always win," the drunk smirks.
"What do you mean always?" the bartender asks.
The drunk takes a moment and looks around the bar.
"Here. You see that glass over there?" He points to a an empty mug of beer at the end of the bar, 20 feet away. "I'll bet you $100 I can piss in it from here."
Impossible! the bartender thinks. "You're on," the bartender says, shaking the drunk's hand (and quickly wiping it off on his apron).
Unsteadily, the drunk climbs up on top of the bar, pulls his dick out and begins peeing everywhere. He stumbles and steps in his own piss, causing him to slip and he plummets off the bar. The bartender looks over the railing and sees the man lying flat on his back, hands flailing, as his piss arcs up into the air and hits him directly in the face. The bartender erupts with laughter at the comical sight, slapping his hand on the bar in triumph.
Suddenly, across the room, a man shouts in anger and rushes the bar. "Are you fucking kidding me?!" he screams.
Surprised, the bartender says "What?! What?"
The angry man points down at the drunk and yells, "He just bet me a thousand dollars that he could piss all over your bar and you'd laugh about it!"

Kids Electrocute Dad

packo says...

autoshop class

making go karts using old lawnmowers

checking sparkplug to see if its firing, my buddy is holding it in his hand, my other buddy yanks the chord to start lawnmower

he makes a "ungh" sound as his arms... both, the one holding the spark plug and the one not, go straight up in the air like a ref signalling a touchdown


i still laugh about it



then there was the time I electrocuted my physics teacher in grade 12 lol

air puck with string of beads down hose so based on frequency you could create data points on a piece of paper as the puck travelled in an arc (table was slightly elevated so there was a slope)... you engage the electricity by stepping on a pedal



he called me over to look at something, stepped fully on the pedal while he was holding the puck in his hand lol

i was oblivious, my buddy figured it out because he was looking at my teacher and had heard the zap, zap, zap, zap... the teacher was getting shocks but held onto the puck, trying to figure out what was going on... until finally he threw the puck... the beads in the tube came apart, funnelled out the tube and had to be rethread



by my buddy, not me lol

Huge Power Plant Explosion in Ponca City, Oklahoma

KrazyKat42 says...

>> ^charliem:

Its a substation....not a power plant, and its a transformer fire. They are full of mineral oil...so yeah....


Yeah. The electric arc is boiling the oil inside. When it gets hot enough to melt the steel outside, kaboom. Too bad the vid ended so soon.

Huge Power Plant Explosion in Ponca City, Oklahoma

Huge Power Plant Explosion in Ponca City, Oklahoma

ReverendTed says...

Wonder what that was. Looked like the top popped off an LP or gasoline tank - perhaps a gasoline generator? Whatever it was, the arcing stopped when it blew.
Edit: Apparently it was a diesel generator substation.

Anyway, has anyone seen my pet squirrel?

thrive-what on earth will it take?-official trailer

How a Microwave Oven Works

Reefie says...

When a microwave oven breaks it's typically one of 3 things, all of which are quite cheap to repair:
1: magnetron fuse has blown. These fuses range from 500mA up to 1700mA depending on the type of microwaves I've encountered. Typically overpriced, these fuses often sell for upwards of 15 quid despite costing as little as 50 pence from distributors.
2: wave guide cover has been burned through due to arcing of the microwaves. These wave guide covers (or shields) can be replaced by cutting a piece of sheet mica to size using the old wave guide cover as a template. Manufacturers' own replacement covers can often cost around 20 quid.
3: Door sensor is broken, probably from shutting the door too harshly, repeatedly. Considering these things are typically no more complex than a switch that is pressed when the door is closed, manufacturers love to go out of their way to make them look as complex as possible, and therefore drive up prices of spares that are just glorified on/off switches. Usually I recommend buying the manufacturer's own part as a replacement, but on occasion I've helped friends by doing a low-cost repair using a cheap switch from Maplin.

If you took the time to read this I hope you found it useful; if I bored you I'm sorry but I don't know how to give you those 60 seconds of your life back

the eleventh doctor is a total badass

enoch says...

>> ^Stormsinger:

Personally, I find Christopher Eccleston's manic portrayal to be my own favorite, although I came to appreciate Tennant's qualities by the end of his arc. Smith is quite good though...he certainly has nothing to be ashamed of.


i can agree with that.i just mentioned tennant because he was the previous doctor and i had become attached.

the eleventh doctor is a total badass

Stormsinger says...

Personally, I find Christopher Eccleston's manic portrayal to be my own favorite, although I came to appreciate Tennant's qualities by the end of his arc. Smith is quite good though...he certainly has nothing to be ashamed of.

Blonde Girl Totally Fails Rope Swing

spoco2 says...

Ahh, people with zero concept of the forces that are about to occur.

Seriously, a little bit of 'you know, at the top of this arc, I'm pretty sure I should be holding on pretty tight' would have solved that. That, and starting off holding onto the rope MUCH higher than she did so she could have got her legs on.

Revolution - Trailer

ChaosEngine says...

>> ^HugeJerk:

J.J. Abrams does a good job of finding interesting show ideas, putting together a decent cast, getting a budget for a good looking production... and then leaves the shows to writers who have no idea on where they are going to take it, so it ends up a confusing mess that never has a satisfying pay-off.


Agreed, premise != story arc.

Tree Catches Fire After Touching Power Lines

Tree Catches Fire After Touching Power Lines

Tree Catches Fire After Touching Power Lines



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