Are you worried about radioactive granite countertops? Gorgeous kitchen counters often do radiate radon, but the levels are low and probably not hazardous.
For eons, human beings have felt that certain numbers, ratios, and shapes have sacred significance. For instance, the number ‘7’ has had great significance in various aspects of many cultures, geometric shapes have been associated with numbers, and the Fibonacci series and Golden Ratio are still instrumental in everything from Art to Music. Sacred Meanings in Geometric […]
Andreas Vesalius was a Belgian physician, anatomist and teacher. He is the founder of modern human anatomy, and is famous for his textbook Fabrica, considered the greatest medical book in his time. The actual name of the book is De humani corporis fabrica (On the Fabric of the Human Body), written in 1543. In the […]
Sodium is a soft, light, silvery metallic chemical element. It is extremely reactive and is never found naturally as pure sodium, thus, it combines with other elements. Sodium changes color at high pressures. At a glance, and in Mendeleev’s Periodic Law of Elements, sodium belongs to category alkali metal, it has the symbol Na, and […]
Engineer Godfrey Hounsfield and physicist Allan Cormack invented the “computed tomography” (CT) scan. Also known as a “computed axial tomography” (CAT) scan, it allows doctors to see the soft tissues inside the body, unlike the conventional X-ray that only allows the outline of bones and organs to be seen. As it uses a computer to […]
Sir Edward Frankland was one of the foremost English chemists of his day. He laid the foundation of modern structural chemistry through his discovery of the theory of valence, which states that atoms come together to make chemical compounds in regular ratios. He also introduced the term “bond” to describe the way that atoms link […]
Dutch astronomer, mathematician and physicist Christiaan Huygens is famous for his invention of the first accurate pendulum clock, as well as his discovery of the rings of Saturn and its largest moon, Titan. He also founded the wave theory of light known as “Huygens Construction,” which he outlined in his Treatise on Light. Early […]