In the United States, the Food and Drug Administration (FDA) regulates condoms to ensure their safety and effectiveness. Different countries have different regulatory agencies. For example, condoms in Europe that have been properly tested and approved should carry the CE Mark. Elsewhere in the world, you can find that condoms are ISO approved. Also, individual [...]
Archive for November 7th, 2007
How are condoms tested?
Posted in Biomaterials, Inventions, tagged condom, latex on November 7, 2007 | Leave a Comment »
The condom history
Posted in Biomaterials, Inventions, tagged condom, history, latex on November 7, 2007 | Leave a Comment »
1000 BC: Condom use can be traced back several thousand years. It is known that around 1000 BC the ancient Egyptians used a linen sheath for protection against disease.1
Who were invented the condom?
Posted in Biomaterials, Inventions, tagged condom, Invention, latex on November 7, 2007 | Leave a Comment »
Condom, as everyone knows, is a protective sheathe made from rubbery substance such as latex or polyurethane, close at one end and open at another. It protects the user from Sexually Transmitted Diseases (such as AIDS and many more) and helps in avoiding unwanted pregnancy. Condoms come in different sizes, shapes, colors, flavors etc. They [...]
Telephone
Posted in Inventions, Telecommunication, tagged ALEXANDER GRAHAM BELL, Telephone on November 7, 2007 | Leave a Comment »
Alexander Graham Bell (March 3, 1847, Edinburgh, Scotland – August 2, 1922, Baddek, Nova Scotia) invented the telephone (with Thomas Watson) in 1876. Bell also improved Thomas Edison’s phonograph. Bell invented the multiple telegraph (1875), the hydroairplane, the photo-sensitive selenium cell (the photophone, a wireless phone, developed with Sumner Tainter), and new techniques for teaching [...]
Betha Decays
Posted in Biomed World, Inventions on November 7, 2007 | Leave a Comment »
Dr. Chien-Shiung Wu (Shanghai, China, May 31, 1912 – New York, USA, February 16, 1997) was a nuclear physicist who studied beta-decay (a weak interaction in which one of the neutrons in the nucleus of an atom decays into a proton and an electron; the proton enters the nucleus, forming an isotope, and the electron [...]
Contact Lens
Posted in Biomed World, Inventions, tagged Invention, Leonardo Da Vinci on November 7, 2007 | Leave a Comment »
Contact lenses are tiny removable lenses that are worn in contact with the eye (they rest directly on the cornea of the eye). Like glasses, they improve the wearer’s vision. This type of lens was envisioned (but not actually made) by Leonardo da Vinci (around 1508) and later by René Descartes (around 1636-1637).
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