reached new heights when used in the aerospace industry. A fantastic material for optical (glasses) lenses is polycarbonate,a form of plastic that can be made transparent and easily molded. They are also impact-resistant, making them a fantastic option for children ...
But when it comes to eyeglass lenses, you no longer have to compromise. Trivex lenses, which rivalpolycarbonate lensesas the safest lenses on the market, are made of an exceptionally clear, lightweight lens material, which translates into excellent all-day wearing comfort. So you can experience ...
There are all kinds of eyeglass lenses, including light-sensitive photochromic ones that darken in sunlight and double-up as sunglasses. You'll also find lenses in binoculars (which use two or three lenses in each of the cylinders serving your eyes) and telescopes, though not all microscopes ...
How can heat damage eyeglass lenses? High heat can damage eyeglass lenses in several ways. Heat can cause the anti-reflective coating and the lenses to expand at different rates. This creates crazing, a web of fine cracks that appear on the lenses. Heat also can damage glasses by: Softening...
Scratch-resistant coatings are common on everything from cars to eyeglass lenses. Antimicrobial bandages - Scientist Robert Burrell created a process to manufacture antibacterial bandages using nanoparticles of silver. Silver ions block microbes' cellular respiration [source: Burnsurgery.org]. In other ...
There are many different types of telescopes available for those interested in exploring the night sky. Telescopes come in a variety of designs, some of which have been around since the 1600s. The first type of telescope ever designed was a refractor, designed by an eyeglass maker in the ...
Polycarbonate sheeting is a type of building material that's used to replace glass in a variety of applications. The main uses of...
Lenses in this index are made out of a special polycarbonate material. They’re massively popular for their price AND their function. Why? Because not only are they durable and impact-resistant, they’re also scratch-resistant and can protect your eyes from harmful UV rays. They’re perfect ...
Actually, horizontal polarized light waves are filtered by *horizontally* aligned "stripes", not vertical ones Byknittingpro— On Mar 29, 2008 Interestingly, polarized lenses make it possible to see what is under the surface of a lake - if the sun is shining off of the lake, I can't see...
Plano lenses areeyeglass lenses that provide no vision correction. They are in widespread use as protective equipment or safety spectacles designed to protect against eye injuries caused by flying dust, dirt, metal, wood chips, and other particles. ...