Making a Lightbulb

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Jeff7

Lifer
Jan 4, 2001
41,596
20
81
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DrPizza

Administrator Elite Member Goat Whisperer
Mar 5, 2001
49,601
167
111
www.slatebrookfarm.com
Great video. Next month, it's electricity time in physics class... I'll show the video after the class has done a light bulb dissection. Amazing the percentage of people who think that both of the wires terminate at the very bottom of the bulb - those who think so clearly don't understand the concept of "complete circuit." Hence, a light bulb dissection lab.
 

Jeff7

Lifer
Jan 4, 2001
41,596
20
81
Great video. Next month, it's electricity time in physics class... I'll show the video after the class has done a light bulb dissection. Amazing the percentage of people who think that both of the wires terminate at the very bottom of the bulb - those who think so clearly don't understand the concept of "complete circuit." Hence, a light bulb dissection lab.
Followed by a class on blackbody radiation, I hope? :whiste:


...to at least explain why white light's is described in degrees Kelvin.


Then right into radio waves and the cosmic microwave background. Mmmm.
(At times it's surprising how few people know that radio, x-rays, microwaves, infrared, and visible light are so very closely related.)
 
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Carson Dyle

Diamond Member
Jul 2, 2012
8,173
524
126
That was probably a production line in Russia or Cuba.

Considering the 100s of millions of incandescent bulbs produced every year up until recently, I find it impossible to believe that the equipment is all decades old, no matter how old the technology of the product that it's producing.
 

Red Squirrel

No Lifer
May 24, 2003
71,305
14,081
126
www.anyf.ca
Great video. Next month, it's electricity time in physics class... I'll show the video after the class has done a light bulb dissection. Amazing the percentage of people who think that both of the wires terminate at the very bottom of the bulb - those who think so clearly don't understand the concept of "complete circuit." Hence, a light bulb dissection lab.

Haha I've even seen diagrams or pictures that show it that way, I always thought it was odd.

Vacuum tubes are actually pretty neat too.

This dude actually makes them by hand:

https://www.youtube.com/watch?v=EzyXMEpq4qw

I actually want to try making a light bulb just for fun. Need a vacuum pump or something to get the air out. I'm thinking a mason jar would probably work very well. I think if you keep it a vacuum it should work fine too, but an inert gas like argon will displace any residual oxygen and I think it also helps stop any corrosion. Helium might work too. That is easier to get than argon.
 

MongGrel

Lifer
Dec 3, 2013
38,466
3,067
121
That was probably a production line in Russia or Cuba.

Considering the 100s of millions of incandescent bulbs produced every year up until recently, I find it impossible to believe that the equipment is all decades old, no matter how old the technology of the product that it's producing.

And you'd be wrong, not to be rude.

I know one place that still uses old 1950's era machines on a line that still are in operation.
 
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runzwithsizorz

Diamond Member
Jan 24, 2002
3,497
14
76
Great video. Next month, it's electricity time in physics class... I'll show the video after the class has done a light bulb dissection. Amazing the percentage of people who think that both of the wires terminate at the very bottom of the bulb - those who think so clearly don't understand the concept of "complete circuit." Hence, a light bulb dissection lab.
Don't just quote *facts*, but, give your students data/info, and make them think! I am relying on you now sir.
 

Red Squirrel

No Lifer
May 24, 2003
71,305
14,081
126
www.anyf.ca
I'm no expert at manufacturing but I would imagine that lot of parts of a process don't necessarily go under any major stress and just chug along for very long and only require general maintenance on the immediate moving portions. Everything is lubed up regularly, things like motors might get changed but the general machine probably is kept up for very long. If it still works then no reason to replace it.
 

Markbnj

Elite Member <br>Moderator Emeritus
Moderator
Sep 16, 2005
15,682
14
81
www.markbetz.net
Bah, I'd have loved if they'd have gone into more detail, and at least found a pun-writer who was worth more than $2/hr. I'm the sort who didn't really care for the episodes where it was just one or two people making something. (Kayaks, fishing flies, hand-painted figurines...) I liked seeing all the machines. Some of the little touches were interesting.

Yeah I was the same way. "On this episode of 'How It's Made' carving decoys in Maryland." Next. I came for the machines.
 

Jeff7

Lifer
Jan 4, 2001
41,596
20
81
Yeah I was the same way. "On this episode of 'How It's Made' carving decoys in Maryland." Next. I came for the machines.
Like my first tour of an electronics assembly facility. I'd seen videos online of the high-speed chip shooters used to assemble motherboards. I was looking forward to it!
Get there....it is not high-tech. There's a soldering oven running DOS on an old desktop-style PC, and a CRT with severe burn-in. (This was just a few years ago, mind you. Some companies were starting to worry about when Microsoft would pull the plug on WinXP.) There was no automatic assembly equipment at all, and not so much as a single conveyor belt. It was just desks with people putting parts into boards.


"Hey kids, let's go to Disneyland, kids!"

Then you are driven past a squashed turtle on the road that your mother had noticed earlier in the day. You manage to feel some surprise at the strong resemblance that the puddles of blood and ejected organs have to Mickey's head and basic features. Then you go home, carrying with you a lesson about setting expectations.




"The machine stopped. Go down there and find the problem."

FML...
At which point you find that the integrated diagnostics tools are as elaborate as a "check engine" light, and the OBD interface was never put in because, during the development stage, management thought it was as much of a waste of time as proper documentation was.

Further investigation shows that the integrated diagnostics hardware is connected to a simple sensor, and is only capable of indicating that the machine has indeed stopped moving.


Worse still, the original designer has not only retired, but has thoughtlessly died of old age, thus robbing you of the chance of throwing the person into the machine's powerful chains once it's brought back to life.
 
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lxskllr

No Lifer
Nov 30, 2004
60,922
11,254
126
At which point you find that the integrated diagnostics tools are as elaborate as a "check engine" light, and the OBD interface was never put in because, during the development stage, management thought it was as much of a waste of time as proper documentation was.

Further investigation shows that the integrated diagnostics hardware is connected to a simple sensor, and is only capable of indicating that the machine has indeed stopped moving.

As you spiral down to the ninth circle of hell :^D