Re: radar

I'd have to force some delta-T. Most of the walls of my house are interior, or smack up against the walls of other houses, so there is very little heat flow to make the studs show up.

The Livermore spinoff, the McEwan guy, had some super cheap impulse radar circuits, and was supposedly working on a stud finder. That was a while ago, so something went wrong.

Not at all, they're going strong:

He didn't look in the right place.

I am right here.

Maybe an induction heating coil. Worst case, it sets fire to the wall if you get the delta-T too high.

That was like 25 years ago, no?

Best regards, Spehro Pefhany

Okay, 20 years:

A $10 radar that "sees" through walls will revolutionize cars, tools, appliances and more.

Best regards, Spehro Pefhany

The PDF technical overview is from 1996. "Development Status" says that they are looking for lincesees. Hardly going strong, to me.

mcewantechnologies.com doesn't work.

Pity; it seemed a cool idea.

What makes you think he would look in a dumpster?

Gaydar?

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The truth of the matter is there's no market for it as stud finders. Even s omeone too dumb to find large objects 16 in. OC ( a standard established in 17th century England and going strong ever since) , the hollow wall anchor technology has advanced to the point where you don't need a stud.

______ Gaydar

Notice the NOT.

I guess you could heat up the nail heads, and thermal image them.

I'll have to try a heat gun, then the FLIR. The studs, and the nail heads, might be cool spots.

I generally use a super magnet to find the nail heads; works well enough. The capacitive stud finders don't seem to work.

Stupidity is, if there was REASONABLE cause to suspect "X" was inside ANY given building, then a search warrant is required for search *AND* that means the hightech s*it is NOT needed, period.

Thought all one needed was a young lady to find studs...

That is the populist version - this is more suitable for here:

It is "see through" for VSVO "see".

Terahertz imaging systems already can but the evidence of all the images and capability seems to have mysteriously vanished from public view. I am still waiting for the picture of my favourite supernova remnant to be published in the open literature (I have seen the image about two years ago now).

It isn't imaging. It is advanced Doppler radar detecting movement and it can trivially be stopped by fine grain chicken wire or metal foil.

US homes have very thin walls for the most part made of wood so are pretty easy to probe. Thermal IR cameras can see through some sheds. Perhaps the tin foil hat brigade do have a point after all!

I doubt they would get far into my walls which range from 0.5m to 1m solid sandstone or engineering brick. And the Victorians hit on this neat way of stopping wall plaster slumping by hanging chicken wire onto the walls before plastering over it. It is like being in a Faraday cage in some parts of the house.

On a sunny day (Mon, 19 Jan 2015 16:24:35 -0800) it happened John Larkin wrote in :

Its a business opportunity, design some stuff.

As to the 'see through walls', that is very old really. I can sell you alu foil for 100$ / m^2, put it under the wall paper.

But then they will fly over with IR detecting choppers.

Few more years babies born with RFID chips implanted with 10 mile range or something, hooked to brain so they (those in power) can read your intentions. One year later they open the reverse channel so they can make you buy, have sex, commit a crime, or drop you dead on the spot. Big computah will run it all, and since those in power are not the most clever ones, big computah will grab them too, and you will all be slaves of Silly Con. Copyright (c) Jan Panteltje 2014 All rights reserved and taken away.

Not necessarily. In "exigent circumstances" a warrant is not needed. In a hostage situation, the SWAT team isn't going to knock on the door and ask where everyone is.

walls/22007615/

They (the pigs) have been doing helo FLIR grow room "discovery" for years, and that gets them a warrant to examine your electrical power usage, and that gets them that search warrant. So "needed"? No. Utilized to obtain warrant? Yes. Constitutional violation? Absolutely. Most (if not all) states as well.

Alarm system type microwave sensors can also "see" water running in pipes. That's one reason you often see microwave sensors packaged as dual-sensors, along with PIR (passive infrared) or sometimes ultrasonic pickups. Both must trip for an alarm to occur.