Posts Tagged ‘field’

How To Build Your Own Energy Balance Product

March 1, 2011 Leave a comment

Sport enhancement products are big business. Even if they don’t work.

Take for example products like Power Balance or Q-Ray, which are designed to work with your body’s “energy field” to increase balance and performance.

The Power Balance bracelets contain holograms. Their FAQ page describes how they work:

The thin polyester film hologram is programmed through a proprietary process, which is designed to mimic Eastern philosophies that have been around for hundreds of years.

Convinced? You shouldn’t be, because they don’t work. Even Power Balance released a statement in Australia noting that there is no scientific evidence to corroborate any of their claims. (Which is probably why their website now states that “there is no assurance it can work for everyone.”)

So how do they become so successful? Check out this promotional video:

My favourite part is when he says it only has to be “within 1-3 inches of your body’s energy field”. The amount of woo makes my head spin!

They will actually perform their balance test at trade shows etc, and you know what? It actually works! But not because of the holograms.

Its simple physics, as explained in by Rhett Allain of Wired here in quantitative physics calculations, or explained visually in the following video demonstration:

It all has to do with what direction you push on the subjects arm. It is not noticeable to the subject, but the person doing the pushing knows exactly what they are doing. Nothing at all to do with the bracelet (or crown, in this case).

So there you go. Now you can make your own energy bracelet or hat or shoe or under-pantaloons and get rich!

New World Record: Most Powerful Railgun

December 11, 2010 Leave a comment

As opposed to a traditional gun, which uses a small explosion to propel a projectile at a target, a railgun uses and electromagnetic field.

If you can generate a strong enough magnetic field, the resulting force can hurl a projectile at unprecedented speeds and energies.

What a navy ship can do is pulse a large amount of electricity through two rails. This generates a huge magnetic field. The resulting magnetic force, called the Lorentz Force, is what accelerates the projectile.

This is a video I saw at Scientific American showing the old world record, which was set in 2008 with an energy of 10 megajoules.

A joule is a unit of energy. A megajoule is a million joules. To put that kind of energy in perspective, a typical 9mm bullet weights about 115 g. If you were to give that bullet 10 megajoules of energy, it would travel at a speed of over 13 kilometers per second! Thats about 8 miles per second!

Now, this new railgun can reach energies of 33 megajoules, a three-fold improvement. Here is the video for the new record which was set yesterday.

The railguns will be able to fire a projectile hundreds of miles at an average speed of roughly Mach 5, or 5 times the speed of sound. The advantages of using railguns means carrying dangerous chemical weapons are unneccessary, as well as being able to fire smaller weapons from a large distance.