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Ask Me: I have a Masters in Electrical Engineering

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02-24-2010 , 05:17 PM

#26

scotchnrocks

Pooh-Bah

Join Date: Mar 2006 Posts: 3,736

Quote:

Originally Posted by CheckCheckFold

Undergrad: EE and Chem E are probably equally hard.

For grad school, Physics and Math, I believe got harder than the Engineering majors. Engineering still had theoretical work but lab work became more needed (lab work is hard in the same sense it is hard to lay bricks).

Good analogy on engineering grad school lol. Just to throw in my two cents, I earned a BS and MS in structural engineering at a top school and agree that ChemE or CE/EE were generally regarded as the toughest.

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02-24-2010 , 05:23 PM

#27

spadebidder

Actually Shows Proof

Join Date: Aug 2008 Posts: 7,905

Can you design a way to run a bank of HPS or MH 1000W lamps in your basement 12 hours/day without noticeable spikes in power consumption and without creating an IR heat signature, or design a substitute that provides equivalent lumens output while accomplishing the aforementioned design goals?

Might be a profitable engineering exercise.

Last edited by spadebidder; 02-24-2010 at 05:23 PM. Reason: it's a joke!

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02-24-2010 , 05:25 PM

#28

Freakin

bacon wannabe

Join Date: Sep 2004 Posts: 17,152

Quote:

Originally Posted by spadebidder

i too, eagerly await the response

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02-24-2010 , 05:27 PM

#29

tagtastic

veteran

Join Date: Jun 2005 Posts: 3,387

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02-24-2010 , 05:45 PM

#30

punkass

Carpal \'Tunnel

Join Date: Oct 2002 Posts: 12,564

Did you take a course in undergrad called Fields, Matter, Waves? If so, how did you stay awake enough to pass the class?

I stopped being an EE major then.

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02-24-2010 , 06:02 PM

#31

kurosh

using god mode

Join Date: Aug 2004 Posts: 8,109

Quote:

Originally Posted by spadebidder

It's impossible to not create an "IR heat signature." An "IR heat signature" means there is an unusual amount of heat coming from the area. If you're powering anything, there is going to be waste in the form of heat. The only thing you can do is mask and vent it.

To avoid spikes in power consumption, run your own generator or steal the electricity.

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02-24-2010 , 06:19 PM

#32

goofball

Beat Nate Silver

Join Date: Oct 2003 Posts: 20,432

Quote:

Originally Posted by spadebidder

fireflies

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02-24-2010 , 06:31 PM

#33

EvilSteve

Midlife Crisis

Join Date: Mar 2006 Posts: 13,195

Quote:

Originally Posted by kurosh

So generator + some type of shielding installed in the ceiling then?

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02-24-2010 , 06:36 PM

#34

lonely_but_rich

ɔarpal \ʇunnel

Join Date: Mar 2009 Posts: 23,431

Are electrons always spinning? If they are spinning what's powering them?

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02-24-2010 , 06:39 PM

#35

cres

Carpal \'Tunnel

Join Date: Oct 2007 Posts: 10,331

Quote:

Originally Posted by brrrrr

How does electrical engineering work? When you plug it in, do the electrons form a full circuit?

and do you call the things in the wall "holes"?

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02-24-2010 , 06:45 PM

#36

goofball

Beat Nate Silver

Join Date: Oct 2003 Posts: 20,432

what causes electrons to have mass?

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02-24-2010 , 06:45 PM

#37

AKSpartan

Carpal \'Tunnel

Join Date: Mar 2008 Posts: 9,931

I asked this in SMP (and had no luck):

Would it be possible to create a simple thermometer using a circuit with a bi-color LED, some type of thermistor, and a battery, the output of the thermometer being either of the two colors (i.e. above or below a specific temperature)? I've done some research and found that thermistors, carbon resistors, and thermocouples can all be used to measure temperature - which is the simplest/best to use for this purpose?

I'm a sophomore chem eng major, this is for part of a project for an introductory engineering class ("design an original product or improve upon an existing product to improve everyday life").

Last edited by AKSpartan; 02-24-2010 at 06:51 PM.

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02-24-2010 , 06:47 PM

#38

kurosh

using god mode

Join Date: Aug 2004 Posts: 8,109

Quote:

Originally Posted by EvilSteve

So generator + some type of shielding installed in the ceiling then?

You would need shielding all around the heat source, not just the ceiling. Also, shielding by itself won't work. The heat still has to go somewhere. I'm not an expert, but the best thing I can immediately think of are cooled walls surrounding the grow room and venting the heat out somewhere undetectable. That'll be tough though. I'd suggest venting it out in multiple pipes into multiple places. Sources of water are best. Maybe the sewers or a nearby river?

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02-24-2010 , 06:47 PM

#39

Peter Harris

Carpal \'Tunnel

Join Date: Nov 2003 Posts: 8,424

my bathroom light switch is broken. Will you come round and fix it, please?

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02-24-2010 , 06:49 PM

#40

amoeba

Carpal \'Tunnel

Join Date: Sep 2004 Posts: 20,431

If you want to hide the heat, its easier to hide it as something else that is explainable rather than attempting to remove the heat entirely.

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02-24-2010 , 06:49 PM

#41

kurosh

using god mode

Join Date: Aug 2004 Posts: 8,109

Quote:

Originally Posted by AKSpartan

I've only had a basic circuits + computer engineering class, but this seems trivial to do with a thermistor.

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02-24-2010 , 06:52 PM

#42

TomCollins

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Join Date: Jul 2003 Posts: 43,064

Quote:

Originally Posted by kurosh

I've only had a basic circuits + computer engineering class, but this seems trivial to do with a thermistor.

You'd probably need a few more trivial components to do this. At least some resistors.

Thermistors and thermocouples are fairly similar in terms of what you get as a result, but you will have different ranges and accuracy levels with them. Thermocouples are pretty much the lowest end of what you wanted, but would work for a lot of situations very cheaply with reasonable accuracy.

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02-24-2010 , 06:54 PM

#43

killsadie

banned

Join Date: Sep 2006 Posts: 6,338

i was not satisfied with my given answer

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02-24-2010 , 06:54 PM

#44

amoeba

Carpal \'Tunnel

Join Date: Sep 2004 Posts: 20,431

it would be much simpler if the LED was just on off instead of bi color.

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02-24-2010 , 06:57 PM

#45

boozy

banned

Join Date: Jul 2009 Posts: 1,031

why did you go to school for so long and make so little money?

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02-24-2010 , 06:58 PM

#46

CORed

Carpal \'Tunnel

Join Date: Sep 2002 Posts: 6,044

Quote:

Originally Posted by spadebidder

Just move to California or Colorado and get a license to grow medical marijuana.

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02-24-2010 , 07:00 PM

#47

boozy

banned

Join Date: Jul 2009 Posts: 1,031

Colorado is booming now with the legal bud. Just read a story where some 19y/o kid makes 20gs a day slanging bud legally

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02-24-2010 , 07:02 PM

#48

boozy

banned

Join Date: Jul 2009 Posts: 1,031

This isnt the one I was talking about but still pretty awsome

http://www.cnn.com/2009/US/12/11/can...kid/index.html

Quote:

He has about 200 regular patients, he said, and another 500 who come by from time to time. He employs four "bud tenders" and said he grosses about $5,000 a day