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Your search for "metal detectors" returned 103 results

How to Trace Electrical Wiring in a Wall

home.howstuffworks.com/home-improvement/remodeling/trace-electrical-wiring.htm

Tracing electrical wiring in walls can be tricky, and it involves more than just looking for the wires themselves. But with the right tools in hand, you can do it and leave no damage behind.

When Was the Radio Invented?

science.howstuffworks.com/innovation/inventions/who-invented-the-radio.htm

Many people consider Guglielmo Marconi the inventor of the radio. After all, he did get the Nobel Prize for it. But others credit Nikola Tesla because the Supreme Court upheld his patent for the invention of radio. So who should get the recognition?

We Need to Stop Believing These Five Tech Myths

electronics.howstuffworks.com/cameras-with-more-megapixels-take-better-pictures-plus-4-more-tech-myths.htm

HowStuffWorks looks at five still-popular tech myths, like charging your phone overnight is bad and the best camera has the most megapixels.

Who Built These Mysterious Concrete Arrows?

history.howstuffworks.com/american-history/who-built-these-mysterious-concrete-arrows.htm

Giant arrows guided American airmail pilots on nighttime routes up until the 1940s. HowStuffWorks takes a look.

Could treasure hunters have discovered "Nazi Gold"?

history.howstuffworks.com/history-vs-myth/treasure-hunters-nazi-gold.htm

Treasure hunters think they might have found Nazi gold. Learn about the history of Nazi gold and why treasure hunters think they've found the Amber Room.

What happens to weapons confiscated at the airport?

people.howstuffworks.com/weapons-confiscated-at-airport.htm

Thousands of weapons are confiscated at airports every day. Learn where weapons confiscated at the airport go after they leave airport security.

How Burglar Alarms Work

home.howstuffworks.com/home-improvement/household-safety/burglar-alarm.htm

Burglar alarms are found in every retail store and are becoming more common in private homes. Find out how a simple burglar alarm system works.

Does tinfoil on your hubcaps bypass police radar?

auto.howstuffworks.com/car-driving-safety/safety-regulatory-devices/does-tinfoil-on-hubcaps-bypass-police-radar.htm

Metal is super reflective, but it might not reflect a stop by the police. Learn if tinfoil on your hubcaps helps bypass police radar at HowStuffWorks.

What's the difference between backscatter machines and millimeter wave scanners?

science.howstuffworks.com/backscatter-machines-vs-millimeter-wave-scanners.htm

Nope, these advanced imaging technologies are not the same. So whether you're concerned about privacy, safety or time as you're shuffling through the airport security line, we can tell you how these two types of scanners stack up against each other.

How Gold Works

science.howstuffworks.com/gold.htm

We love it. We wear it glittering around our necks and sparkling at our ears, wrists and feet. We pass it down to our children and hoard it in secret stashes. Why is this precious metal so prized?

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