What is Wrong With School Lunches?

If you have watched Jamie Olivers' show "Food Revolution", you already know about the poor state that many school lunches are in. After watching the first couple episodes, I was appalled to see pizza being served for breakfast, kids not knowing the difference between a potato and a tomato, the

How Much Oil?

How much oil really is leaking from the broken pipe in the Gulf?

BP's numbers are far from the truth.

The oil slick is now covering about 50 square miles.

Thats a lot of oil.

Garage Door Rollers

Does anyone know where I can get 2 inch rollers with standard 7/16 bore, but without the shaft for garage doors. Everywhere I look they come with a shaft. My doors are old (antique) and the rollers are able to slide on the shaft rather than the shaft sliding in the hinge. I'm too cheap to buy new do

DC Power Supply

I'm trying to make a simple dc power supply w/ a full bridge rectifier, 2 caps, a pot, and a lm317. my transformer is a 120v to 25.2 v. I'm using this typical schematic and I know it works, but every time I turn the pot down to around 17v from a max of about 28v, the pot starts smoking, has any one

PLH Air Conditioning Unit (Mitsubushi)

Dose any body have an operating manual for a PLH-3GKLH-UK air conditioning unit. Drawing number BG7R519H01.

This unit is coming up with an error code of, EO. The unit is no longer listed by the manufacturer. The current problem came when it had water running out of it.

This unit must h

Solid State Drives – the Eventual Solution?

At last, new Silicon Disk Drives are on the market, with capacities to rival old-school Hard Disks, and speeds to greatly exceed those. They are cool, literally emit no heat, and virtually silent.

Oh yes... And they are virtually indestructible. Made of solid-state monoliths, they are shock

Swimming Pool Pump Gets Hot

I've installed a swimming pool pump and a booster pump in series . the two pumps are getting hot in a way that I can't keep my hand on the pump for more than 1 minute. I don't know why !!?? can I leave them like this or I have to do some thing ?? they are working 8 hours every day.

note : all t

Battery Type for Solar Powered Car Stereo

I have a low power.. (about 20W per ch.) car stereo that uses a pair of small 4" speaker drivers.. A couple of small fans and a few led lights powered off of a BIG car battery.

I want to upgrade this system for better efficiency so that it will still sound good but require fewer battery swaps d

BP Pledges $500m to Study Spill

From BBC News | Science & Environment | UK Edition:

BP has pledged $500m (£346m) to study the impact on the Gulf of Mexico of the oil spill, as top US officials flew over the area to assess BP's response. A BP official said a bid to plug the leaking well with heavy mud and cemen

How To Detail Your Car

From PopularMechanics.com Automotive - RSS Feed:

It's the Great American Ritual-washing the car. You get your bucket of soapy water and a sponge, fire up the garden hose and go to work. Your neighbor in the adjoining driveway does the same. But he's assembled a whole array of car c

Designing a Crematorium

I've been asked to come up with a design for a crematorium for local construction - that is, the investors do not want to buy a packaged crematory furnace and ship it here from another continent. I've been able to find some information on-line, sometimes in odd places, but I wonder whether any CR4 s

97 Cavalier Stalls While Driving in the Rain

I had a new fuel pump, fuel filter put on my daughters 97 cavalier with 98000 miles. The car would stall sporadically, sometimes start again and pump made a loud whistling type noise. Now the car runs fine when the roads are dry, fuel pump still makes the loud noise, but when it rains and roads are

Actuator control

What is the advantage of using a 24V DC derived internally for local control voltage in an Electric actuator in for a motor operated valve (MOV) instead of 110V AC.. ? what is this voltage used for actually in local controls? thanks in advance