There's just something cool about layering colored liquids! This
particular density column shows off the red, white and blue colors, plus
(of course) you can light it on fire. I've got instructions for
patriotic-colored liquid layers using common household materials, or you
can make a layered mixed drink for a holiday celebration. Both
alcoholic and non-alcoholic versions are simple to make!
Red, White and Blue Layered Mixed Drinks
Red: food coloring with 151 rum or red fruit juice or grenadine
White: Irish cream or half-and-half or milk
Blue: food coloring with simple syrup or blue curacao
Did you know you can get a condition called "popcorn lung" from
breathing the artificial butter flavoring from microwave popcorn? The
artificial butter flavoring is a naturally-occurring chemical called
diacetyl. Diacetyl causes no problems in the butter, milk, cheese, beer,
and wine where it's found, but when vaporized it can cause damage to
the bronchioles in the lungs, eventually deteriorating them into the
serious irreversible condition called bronchiolitis obliterans. If you
nuke a bag of popcorn every now and then, it's not a health concern for
you, but workers in the factories producing the butter-flavored popcorn
are at risk for lung damage, as are consumers who pop a couple of bags
of corn daily. I would guess theater concession stand employees would
also fall into this category.
May 21st was the birthday of two men who invented two
electric diagnostic devices that are often confused with each other. The
EEG, or electroencephalogram device, was invented by German
psychologist Hans Berger to record electrical signals from the brain.
The ECG or EKG, otherwise known as electrocardiogram was invented by
Dutch physician Willem Einthoven to measure the electrical current given
off by heart beats.
Perhaps nobody mixes these two devices up, but I sometimes do. All you
have to remember: EEG - brain waves, ECG or EKG - heart beats.
Liquid nitrogen is literally cool! If you get hold of some, I expect you
to be creative coming up with things to do with it. However, what if
you're stumped for ideas? I'm planning to get some liquid nitrogen and
want to make sure I don't miss any cool projects. Therefore, I've
compiled a list of activities you can perform using liquid nitrogen,
plus there is a section where you can read ideas for liquid nitrogen projects or add your own favorite project. Of course, you're welcome to post an idea right here.