What is Macular Degeneration?
Macular degeneration is the death of retinal cells responsible for fine detail and color. It is perceived as a black spot in the middle of your visual field, a sort of reverse tunnel vision. As the condition worsens, you lose your ability to read or recognize faces.
There is no cure for this affliction at present. In its early stages you can compensate with magnifiers that are stronger than simple handheld round readers. Continue reading
What is Water Hardness & What Causes It?
Water hardness is simply a measure of dissolved minerals in your water. The most common are calcium carbonate (CaCO3) and magnesium carbonate (MgCO3). Rainwater is inherently soft but if it encounters limestone or chalk as it seeps into the ground, it can dissolve some of the rock which is made up of those minerals. The rate of dissolution is even greater if the pH of the rainwater is high (acid rain dissolves limestone even more). Continue reading
Test Tube Uses
Test tubes aren’t just for the lab. You’ll find them in the kitchen, restaurants and bars, as product samplers, at parties and even at weddings. We’ve listed just a few of the brilliant ideas sent in by our customers. Thanks to all of our contributors!
Functional Groups-See the Difference?
Molecular models are important learning tools even now with computer versions available. Physical models help understand naming functional groups, see the importance of atom geometry, molecular symmetry, bond rotation & more. Teaching chemistry in an auditorium? Then you need extra large molecular models.
Custom imprinted science glassware with personal messages or corporate logos is becoming increasingly popular & not just for science and technology companies. Lab beakers are being used as shot glasses and drinking vessels by breweries and distilleries. Weddings see them put into service for holding candy and flowers. Here is an interesting example we recently did. Continue reading
Gold Logo Magnifiers
Whether you are a consultant, educator or financial advisor, you’ve given your clients something to remind them of you. Make that something as memorable as you can so it doesn’t end up in a desk drawer or the waste basket. Here are three examples that do just that. Continue reading