Slapshots In Slow Motion

 Amusing, Information  Comments Off on Slapshots In Slow Motion
Apr 012014
 
Slapshots In Slow Motion

 
The physics behind a successful slapshot and why hockey sticks snap.

The slapshot is the fastest shot in hockey. One satisfying thwack and the puck goes flying at incredible speeds. Except it’s not really one thwack, it’s two, and our buddy Destin at Smarter Every Day has both the science know-how and the super high-speed slow-motion cameras to show you exactly how it works.

Turns out that as the stick hits the ice first it bends back a little, storing potential energy. Then, as it is lifted, it springs forward off the ice, giving the puck a powerful flick that’s actually faster than the hockey player’s follow-through would otherwise be. The wide-angle lens and 3200 frames per second frame rate do a perfect job of illustrating it.

Also, covered in this video: How the flex on hockey sticks is rated, and what happens when you crush a hockey puck with 80,000 pounds worth of force (spoiler: awesomeness). The whole video is a must watch for any hockey fan. It’s one thing to know the rules of the sport you love; it’s another to know the rules of physics it follows.

Source…

via

Eyeball Floaters Explained

 Information  Comments Off on Eyeball Floaters Explained
Mar 282014
 

Eyeball Floaters Explained

Almost everyone sees a few floaters at one time or another. They can occur more frequently and become more noticeable as you grow older. Hank Green of SciShow explains the cause of these specks or squiggles that sometimes appear in our field of vision.

Sometimes our eyes do weird things. One of the things that it sometimes does is get floaters. What are they? Where do they come from?

 

Which Battery Lasts The Longest?

 Amusing, Information  Comments Off on Which Battery Lasts The Longest?
Mar 282014
 

Which battery lasts the longest? According to this video regular Duracell batteries are your best choice.

We put the major battery brands to the test to find out which battery will give you the most bang for your buck!

Our testing process was fairly simple but effective. We used the exact same brand of flashlight (Maglite Xenon) all straight from the box. Each pair of batteries tested came from different stores around the Portland, OR area. Set 1 came from Fred Meyer, set 2 from Target and set 3 from Safeway. We did this to make sure we used different shipments and manufacturing dates from the battery companies.

While the procedure was not necessarily scientific, it gives you an indication of what you might expect when purchasing not only batteries, but any product on the market today. It’s always good to do your own research and make purchases based on what you find to work over a long period of time.

The oddest result was with the Energizer 9x Ultimate. It did not perform as expected. After some research we found that this particular battery is mainly intended to be used in high-draw electronics such as digital cameras. However, the marketing on the box says it is GREAT for flashlights. Go figure…

 

Does Shivering Help You Lose Weight?

 Information  Comments Off on Does Shivering Help You Lose Weight?
Mar 272014
 

In a nutshell… Global Warming makes you fat!

Will shivering help you lose weight? It’s unlikely, but exercising in the cold might be beneficial! The body burns energy to keep you warm through a process called “temperature training,” and Trace is here to tell you how getting use to the cold will help you burn away those unwanted calories.

Read More:
Cold-Weather Benefit: Shivering May Count As Exercise
“Shivering triggers a response in muscles similar to that of exercise, new research suggests. The study, published today (Feb. 4) in the journal Cell Metabolism, found that the muscles of shivering people triggers the release of a hormone that activates brown fat, a type of fat that burns energy to generate heat.”

Evidence That Shivering and Exercise May Convert White Fat to Brown
“A new study suggests that shivering and bouts of moderate exercise are equally capable of stimulating the conversion of energy-storing ‘white fat’ into energy-burning ‘brown fat’.”

Brown Fat – Keeps You Warm And Keeps You Slim
“People with more brown fat seem better able to stay warm when it is cold, Canadian researchers reported in the Journal of Clinical Investigation. They added that the findings of their study could eventually be used to find ways of fighting obesity. Not much has been known about brown fat, a type of good fat, until recently.”

Cold Air Could Help You Lose Weight
“‘Temperature training’ may be what is missing from your weight loss plan. New evidence suggests that regular exposure to mildly cold air may help people lose weight by increasing the amount of energy their bodies have to expend to keep their core temperature up, researchers say.”

Turn Down The Thermostat To Support Weight Loss, Say Researchers
“New research suggests weight loss isn’t just about living a healthy lifestyle — the temperature of the space you live in may have an impact too.”

 

 Older Entries  Newer Entries