Is the Five-Second Rule Real?

Oops! You drop your precious midnight snack on the floor! You just picked it up really quick, like less than five seconds, so it is ok to eat, right? But is the 5-second rule really legit? The 5-Second Rule is no panacea, but the simple realization that procrastination is a natural and valid response to stress, and…

What Does SPF Mean?

Sunscreen comes in different levels of SPF, or sun protection factor, but what does that mean for your skin and the ultraviolet radiation hitting it? SPF stands for Sun Protection Factor and refers to the theoretical amount of time you can stay in the sun without getting sunburned. For example, an SPF of 15 would allow you…

Why Does Sweat Turn Shirts Yellow?

Contrary to popular belief, sweat doesn’t cause the yellow stains. In fact, sweat is a colourless liquid. It, therefore, cannot possibly cause staining even on light coloured clothes. A chemical reaction then occurs between the deodorant or antiperspirant and the sweat. Yellow pit stains are caused when odourless, colourless sweat reacts with aluminum in antiperspirants. … It’s why yellow pit stains appear on your white undershirts or…

What is motion sickness?

If you’ve ever been sick to your stomach on a rocking boat or a bumpy aeroplane ride, you know the discomfort of motion sickness. Motion sickness is the feeling you get when the motion you sense with your inner ear is different from the motion you visualize. It is a common condition that occurs in some people who travel by car,…

Paper Towel vs Hand Dryers

Which is more hygienic – paper towel or hand dryers? We’re reasonably sure that using hand dryers is, in fact, the way to go if you’re looking to help out the environment. But that’s not why we’re here; Because a recent study found that using certain hand dryers spreads 1300 times as many germs around the…

Instant Water Freezing

Water doesn’t always freeze when it’s supposed to. You can cool water below its stated freezing point and then crystallize it into ice on command. This is known as supercooling. Supercooling, a state where liquids do not solidify even below their normal freezing point, still puzzles scientists today. A good example of this phenomenon is found everyday in…

Why are jeans mostly blue?

Have you wondered… Why are jeans mostly blue in colour? Why do we have faded jeans? Why do our jeans have rivets? Traditionally, jeans were dyed to a blue colour using natural indigo dye. Most denim is now dyed using synthetic indigo. Approximately 20 thousand tons of indigo are produced annually for this purpose, though only a few grams of the…

How are Pencils made?

Making pencils is an intense process. At the Pencil Factory a “Groover machine” cuts grooves into the slats to accept the writing core (or “lead”). Writing cores – made from a mixture of graphite and clay – are placed into the grooves. Coloring pencils may use wax-based cores while many other formulations are used in cosmetic pencils. A pencil is a writing implement or art medium constructed…