The human eye and brain work together to perceive colour. Light is sensed on the retina at the back of the eye. The centre of the retina contains about 6-7 million cells called cones. Different ones are sensitive to red, green, and blue light.
Our Universe is a remarkable place and not a little odd in some of the ways it works. For instance have you ever heard of left and right handed molecules ? Or been told that, chemically speaking, an orange is a ‘left-handed’ lemon!
Why Do We Cry? In a Nutshell : Crying is beneficial to health and mental well-being. A good cry is great for body and mind.
We also look in this article at the very complex plumbing system and tear film layers that work hard to protect your eyes.
While the planets may not affect us in ways astrologers would have us believe, events on Earth are undoubtedly influenced by the gravitational pull of our celestial neighbours and the results are rather more important than liaisons with tall dark strangers. But what exactly are the effects?
Goose bumps are small bumps on a person’s skin at the base of body hairs. Tiny muscles at the base of each hair contract and pull the hair erect. The most common type of goose bumps is a response to cold.
Some people get grey (or white) hairs in their twenties, and others still have dark hair well into their seventies and eighties. The process of greying can occur gradually over many years as individual hair follicles stop producing colour, or it can happen within a matter of months or a few years. How long depends a lot on genetics.
There are many people who often claim to have an arthritic joint with the power to tell the future, at least meteorologically. The idea that certain painful health conditions are affected by the weather is an ancient claim, dating back to at least Hippocrates in the 4th century B.C and no even doubt earlier. But can this phenomenon be explained?
In this article we present you with some wacky facts as well as answering some of the more weird questions – questions that you never even knew you should’ve asked!
Weird Questions, that you never even asked, Answered – What does Space Smell Like?
Why Does Water Freeze?
In a Nutshell … Water freezes because water molecules stick to one another when they get cold and slow down.
Why, in an atom, does the negatively charged electron not collapse into the positively charged nucleus?
If the nucleus of an atom is positively charged then why doesn’t the negatively charged electron collapse into it? To answer this we’re going to have to delve into the history of how our understanding of the atomic world has evolved, because the very nature of this question is based on a very old view of the atom. In the Beginning … When Ernest Rutherford, the New Zealand-born founder of nuclear physics, first...
Space is, famously, a pretty empty place. So, how is it possible to have weather there?
How have our ideas about atoms changed over the years? In this article we look at how our atomic models have developed over time. It is entirely probable that we aren’t there yet and our understanding of the strange world, that is the realm of sub-atomic particle, will change again at some time in the future. Although our article starts in the 1800s, the idea of atoms was around long before that. It is in Ancient Greece that we...
Why Do Light Bulbs Light Up? The answer to this one is in fact changing … In this article we look at BOTH Incandescent and LED Light bulbs.
In the summer of 1994 the States of Guernsey commissioned the design for a new Liberation Monument, to commemorate the 50th Anniversary of Liberation from the German occupying forces in 1945. The result is a truly amazing fusion of art and science. On the 9th May each year the shadow from the needle-like monument falls across a bench recording the events of that day at the exact same time they occurred.