Best Electronics

http://bongotronics.com/best-electronics/

To find the best electronics I comparison shop.

Before I invest my hard-earned money, products go under the microscope.

Lots of choices, some junk, and a few real gems translate into a real chore if you are like me and HATE to make a shopping mistake. I once bought a lousy computer router that wasted two frustrating days and never worked for me.

Tip: Start with electronics best sellers, read the reviews, then find reasons NOT to buy.

Having a HUGE number of reviewers who report any glitches, gremlins, gotchas (and goodies) gives me the confidence that I’m getting the best electronics on the market.

Here is a list of Amazon best electronics sellers to get you started.

Top notch router lets you share your cable connection with devices all over your abode. Lag-free gaming and video streaming. Highly rated and a best seller.

Connects 4 USB devices. Inexpensive and a best seller.

Hero 4 is a GoPro camera that people who love to buy the best electronics love to buy. A best seller.

If you have a GoPro (see above) you will need a head strap. You could make your own out of a miner’s helmet and duct tape but at this price, why? Many found this GoPro accessory an irresistible best electronics buy.

If you are a bold adventurer, strap on your GoPro to capture your future exploits. Paranoid? Wear backward.

During a power outage you need light, information, and most important, a way to charge your smart phone. A minute of cranking charges this piece of gear with enough juice to power five minutes of radio, 30 minutes of flashlight, and five minutes of calling on your cell phone. Reviewers give high ratings to this bestselling emergency device. Don’t wait until the power goes out to order.

Frankly, when it comes to shopping electronic gear, or any product, most of the manufacturer’s technical specs go right over my head. But I can understand when an actual buyer says, “I love it!” and then tells me why.

 

Neodymium Magnet in Copper Pipe

Neodymium Magnets

Mighty, Amazing and Mighty Amazing!

 

 

 

 

 

 

Neodymium magnet in a copper pipe video

Drop a neodymium magnet through a copper pipe and it slows down.

What is going on here?

When the powerful neodymium magnet travels through this heavy copper pipe it slows down as though the force of gravity has been reduced.

Is this an example of anti-gravity?

Perhaps the neodymium magnet is slowed by magnetic attraction to the copper pipe?

No, the magnet is not attracted to copper.  We can see that in the first few moments of the video.

If it were a steel pipe, the neodymium magnet would immediately stick to the pipe.

So if it’s not magnetic attraction, what is going on?  Magnetism is apparently involved but how?

What’s your hypothesis?

If you would like to conduct your own experiments or demonstrations, cheap neodymium magnets are available.

You can buy one of these amazing neodymium magnets on Amazon by clicking on the photo below.

  • Neodymium Iron Boron (NDFeB) Rare Earth Magnets
  • Super Powerful Neodymium Magnets, many times stronger than ceramic or iron magnets
  • Pull Force is 91 lbs, strong enough to require extreme care
  • Highest performance, Low Price
  • Size: 1″ diameter x 1″ thick
  • Quantity: package includes two magnets

Neodymium is a “rare earth.”  Rare earth magnets are extremely powerful and useful for electronics applications.

Imagine tying a disk like the ones below to a string?  You could pick up one-pound metal objects “fishing” down a non-magnetic pipe.  What happens when you put them on a wooden dowel?  A copper dowel or heavy wire?  I have no idea!

Neodymium Rare Earth Magnet Rings

  • 3/8″ Outer Diameter, 1/8 ” Inner Diameter, 1/16″ Thick
  • Pack of 12
  • 1.2 pounds of pull perpendicular to a flat, ideal holding surface.

Any theories on why a neodymium magnet would slow down as it falls through a copper pipe?

Would the same thing happen with an aluminum pipe?

What if the pipe had thinner walls?  Please share your scientific theories or whether you share my conviction that magnets are magic!

Here are some fascinating science gifs

Answer: Eddy currents

Curiosity Rover’s Electronics and Computers Face Test on Mars

Mars as mars rover curiosity enters its life to be saved by electronics and mechanical devices

 Mars looms, a cruel environment for the Curiosity Rover.

Just enough atmosphere to slow down the Curiosity Rover spacecraft to 1,000 miles per hour, but not enough to finish the job.

Never before has mankind attempted such a risky concatenation of electromechanical devices to land on another planet.

For the Mars Rover Curiosity to survive, Jet Propulsion Engineers and Scientists are counting on electronics, pyrotechnic bolts, heat shields, cables, rocket motors, programming — everything —  to work perfectly.

Watch this film to grasp how aerospace electronics have advanced.  See the lengths to which engineers have gone to get the heavy Curiosity safely to Mars.

Even more shocking, see  the ambitious sequence of multiple  electronic and mechanical deployments engineers have planned.  

Engineers are counting on multiple electronic devices to keep their creation, the Curiosity Mars rover, from crashing onto the surface of Mars.  Will they succeed?

The film is called Seven Minutes of Terror.

 

Remember to watch the Curiosity landing at 10-31 PDT on August 5, 2012.

Check the Jet Propulsion Laboratory site for Curiosity Rover updates.