Blogs

You Asked: What is the working principle of a DC motor? --- Sireesha, Tirupathi, India Marshall Brain Answers...

This video shows a family effort in launching a balloon into the stratosphere, 17 miles up. The balloon carries a camera and an iPhone, which acts as a tracking device to aid recovery:If you would like to send up a balloon of your own, this month's i ...

Here is the setup. Take a clear plastic (or glass) drinking glass. Fill it with cool tap water. Let it sit on the counter for a couple of hours. In some cases you will come back to find dozens of small bubbles clinging to the inside of the glass. why?

A sand rail (also sometimes known as a dune buggy*) is a car stripped down to the barest essentials, as you can see in this video:The video demonstrates how simple a sand rail really is. A sand rail consists of:The classic sand rail is powered by the ...

Probably because of all the history classes we all took in grades 1 through 12, many people have a impression of the railroads that comes from the 1800s. We imagine hundreds or thousands of men building railroad tracks using hand-carried wooden railroad ties and hammers. The following video has made the rounds since it was released, with well over half a million views. It is fascinating in a "How It's Made" sense, because it shows an amazing amount of automation now used in the process...

Corrugated cardboard is one of those things that you never really think about, but chances are you see it every day. Look around you. As I am sitting here looking around my office, there is a cardboard box of printer paper, a cardboard box from a UPS package received yesterday, and a cardboard box containing one of the kids' toys. The garage and closets are filled with boxes. Empty cardboard boxes are so common at any retail store that there is usually a special compactor out back to handle all of them. Cardboard is everywhere...

Back in 2003, Aron Ralston became famous for cutting off his own arm. The arm had become wedged under a boulder in a remote area of Utah, and the only way to save himself was to cut it off and go for help...

You Asked: When a brain transplant is performed, does the patient lose his or her memories? --- Abby, Shoreham, N.Y. Marshall Brain Answers: We are still a few years away from the first human brain transplant or head transplant, although there have been experiments in animals. The following videos are not for the weak-stomached, but they do show that experiments have been done in sustaining severed brains and heads, and even transplanting heads, for several decades...

Apparently there are not many people who can complete the gallon-of-milk challenge without puking their guts out. It is nearly impossible for someone to drink a gallon of milk in an hour without throwing up. But why? What makes milk so difficult to drink?

In the following video, John Brenkus submits to a choke hold (specifically a "rear naked choke") by BJ Penn in order to understand the effects of a choke hold on the human brain. It only takes 9 seconds for him to become unconscious...