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You Won't Believe They Roll: How to Build Half Circle and Elliptical Wobblers

If you thought the last post on Two Circle Wobblers was wild, then wait until you see what happens when you build wobblers out of two half circles or two ellipses. In both of these cases, the center of gravity still remains constant in the vertical direction, allowing them to roll down the slightest of inclines or even travel a significant distance on a level surface if given a push or even when blown on.

Starcraft 2: Ghost of the Past trailer

Besides the great game play that made Starcraft great, there is also an equally excellent storyline that goes with it. This why Starcraft stands out so much from other strategy games. Anyone that played the original Starcraft probably still remembers the betrayal and Kerrigan's sad fate.

How To: Do one arm lat pulldowns to work the back

The largest muscle in the back is scientifically known as the latissimus dorsi. You might see it referred to as the "lats" or "wings." The lats are used any time you pull something. For example, when you open a refrigerator or a car door, you are primarily using your lat muscles. The one arm lat pulldown is a great way to work the back. The following are instructions for performing this exercise:

Master the Power: How to Shock People with Your Fingertips

In this article, I'll be showing you how to make a simple yet effective static electricity generator. Basically, this device allows you to carry a constant static charge on your body and discharge it on anything grounded or of opposite polarity. The electricity generated is around 8-10 kV, at a very low current. The shock is enough to startle your friends, just like a static shock from a trampoline or carpeted room. You'll need a little experience in soldering and circuit design to build the ...

How To: Find and Observe the Garradd Comet

If you haven't seen one, a comet is one of the most spectacular astronomical objects in the sky, partially because it is so close to Earth. At the closest, it is only 1.3 a.u. (194,477,400 kilometers) away from Earth. Comet C/2009 P1 Garradd was discovered by Gordon J. Garradd on August 13, 2009. It never comes closer to the sun than Mars's orbit. Usually, a comet moves fast, but it has stopped moving so fast recently, making it really easy to observe. It can be observed by a telescope or wit...

How To: Observe the Quadrantid Meteor Shower

Note: This shower is only visible in the Northern Hemisphere. The Quadrantid meteor shower is one of my personal favorites, mainly because of the amount of meteors it produces. You can sight more than 100 meteors per hour- that's more than 1 meter per minute. Even though that doesn't sound like much, it will make your observing experience much more exciting. The peak is short, typically lasting no more than an hour or so. It is more easily observed on the fourth, with its peak at 1:00 AM EST.

How To: It's How You Play The Game

"Life is difficult." That's how Scott Peck's best-selling book, "The Road Less Travelled", begins. That life is difficult is not news. Over two-thousand years ago the Buddha said it too: Life is suffering. The sanskrit word the Buddha used for suffering is dukkha. Dukkha doesn't refer to physical pain, necessarily. It refers to something more akin to our English word 'dissatisfaction'. Adages abound in our language which attest to the universality of dissatisfaction in our daily lives. "The g...

How To: Make a Two Circle Wobbler from CDs

One of my favorite simple projects is building two circle wobblers. I love how such a simple object amazes with its motion. The two circle wobbler is an object made out of two circles connected to each other in such a way that the center of mass of the object doesn't move up or down as it rolls. This means that it will roll very easily down a slight incline. It will also roll for a significant distance on a level surface if you start it by giving it a small push or even by blowing on it!

News: Gassho and Kokoro

At the beginning of every class, or almost every class, we do a series of exercises. The Japanese word for this sort of calisthenic exercise isundo. These exercises derive from the Goju style of karate created by Miyagi Sensei in Okinawa in the early part of the 20th Century. In devising these exercises Miyagi no doubt borrowed liberally from the Chinese, whose influence on the southernmost island of the Japanese archipelago was immense.

News: Millenium Challenge

In 2000, the U.S. Joint Command Forces, a sort of think tank within the military, began planning a war game named Millennium Challenge. The scenario of the game was as follows: a rogue military commander had broken away from his government somewhere in the Persian Gulf and was threatening to engulf the entire region in war. He had a considerable power base from strong religious and ethnic loyalties, and he was harboring and sponsoring four different terrorist organizations. He was virulently ...

News: G+Me Makes Google+ (Almost) Perfect: An Interview with Huy Zing

G+Me is one of our favorite Chrome extensions here at Google+ Insider's Guide. We love it because it's one of the most comprehensive extensions out there. It attempts to address the "noisy streams" issue, with list mode, and collapsible posts and comments. The creator, +Huy Zing, is very responsive to feedback, and he's been quick to address any issues that arise, including privacy concerns. He's even created a G+Me (Paranoid Edition) extension, for the extra careful Google+ user. And if you ...

News: Tips and Tricks for Gmail

Time to confess a personal bias: I love Gmail. I think it's the best thing since sliced bread. I try to be impartial when I write about software and online services, but seriously -- of all the free email services out there, why would you use anything else?

How To: Do a T-Bar roll

This video demonstrates how to do a T-Bar roll. This exercise works the upper back and lower latisimus dorsi. You can use either a T-Bar rowing machine or a barbell with a T-Bar attachment. Do a T-Bar roll.

How To: Do close-grip pull-ups

This video demonstraates how to do a close-grip pull-up. This exercise primarily works the latisimus dorsi and the middle back and secondary the biceps. You use a v-bar attachment on the pull-up bar and hold handles with both hands. Do close-grip pull-ups.

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