Self-Cooling Drinking Cup from CoolDownDrink, Forget ice Cubes - Cool Your Drinks Without diluting Them. This preserves The True Taste. Perfect for apéros, Gin and Cocktails, 1 x 300 ml Glass/Tumbler

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Dropping glass lenses on hard surfaces can break them, but not plastic lenses. Plastic lenses are scratch-prone, while glass lenses aren’t. The index of glass lenses is higher than that of plastic lenses, and they are also smaller and look better. Enhancements for lenses are usually added to improve the quality of the vision. For instance, mirrored lenses feature a highly reflective surface that not only reflects light but also shields your eyes from other elements. There are also scratch-resistant lenses made of plastic or polycarbonate that are more durable than the untreated lenses. Perfect for various activities, the special scratch-resistant coating makes these lenses ideal for regular use. You also get photochromic lenses that can automatically adjust to the light in surrounding environments to reduce glare and provide enhanced clarity. When it comes to anti-reflective lenses, they allow more light to be transmitted through the lens without the glare and also sharpen the quality of vision. Apart from lens material, choosing the right lens color is also very important. From gray and green to brown, yellow, red and amber, different lens colors add to the performance of your lenses in different light conditions and offer different kinds of protection or vision enhancements. One one hand, brown or green-tinted lenses offer minimal color distortion while enhancing the contrast, while on the other hand, grey-tinted glasses help cut the glare to reduce eyestrain in slightly above average brightness situations. Yellow, amber or gold-tinted ones work well in moderate to low light conditions because of their ability to amplify the available light. To reduce the melting point of silica, it is necessary to add a flux; this is the purpose of the sodium carbonate (soda ash), which makes available the fluxing agent sodium oxide. By adding about 25 percent of the sodium oxide to silica, the melting point is reduced from 1,723 to 850 °C (3,133 to 1,562 °F). But such glasses are easily soluble in water (their solutions are called water glass). The addition of lime ( calcium oxide, or CaO), supplied by the limestone, renders the glass insoluble again, but too much makes a glass prone to devitrification—i.e., the precipitation of crystalline phases in certain ranges of temperature. The optimum composition is about 75 percent silica, 10 percent lime, and 15 percent soda, but even this is too liable to devitrification during certain mechanical forming operations to be satisfactory.

One of the newest mens sunglasses, Aviator shades offer sun protection and are great for oval, diamond, round, rectangle, square, and heart faces. Sunglasses shield your eyes from damaging ultraviolet (UV) rays, ease eye strain in bright light, and keep you safe from flying objects and other dangers. The key to your comfort, whether youre going to work or hiking up a mountain, is finding the appropriate pair of coolers for men. Prescription sunglasses are available in all lens materials, including high-index, polycarbonate, regular (CR-39) plastic,Trivex (a lightweight material similar to polycarbonate) and glass. This 'cooling glass' is more than a new material - it's a key part of the solution to climate change,” said Hu. “By cutting down on air conditioning use, we're taking big steps toward using less energy and reducing our carbon footprint. It shows how new technology can help us build a cooler, greener world." On the left side of the screen, you will find the categories of the sunglasses such as material, frame size and type of goggles.The cheekbones are the broadest part of the oval faces. Oval faces may wear any style, but big frames suit them the best. Wear sunglasses that hug the eyebrows and cheekbones. Aviators, clubmasters, and round sunglasses suit men with oval face. Round face According to the new research paper, the resultant microporous glass coating can lower the temperature of materials beneath it by up to 3.5 °C at noon. Additional calculations show that the use of this material in a standard mid-rise apartment building could potentially reduce that building’s annual carbon emissions by 10%. This 'cooling glass' is more than a new material -- it's a key part of the solution to climate change," he said. "By cutting down on air conditioning use, we're taking big steps toward using less energy and reducing our carbon footprint. It shows how new technology can help us build a cooler, greener world." It’s a game-changing technology that simplifies how we keep buildings cool and energy-efficient,” said assistant research scientist Xinpeng Zhao, the first author of the study. “This could change the way we live and help us take better care of our home and our planet."

You can alter the style of shades depending on your attire or the occasion. For instance, you can wear a more sporty or funky pair of shades for a casual outing with friends and a metal-rimmed one with your office wear. An ornamental frame can add that extra bling to your attire for a daytime wedding or outdoor party. Most of the branded sunglasses are available with UV-protected lenses. It would be best if you always chose to buy a fully tinted, well-covered pair of tinted glasses for complete protection while keeping the style quotient intact. Reference: Zhao X, Li T, Xie H, et al. A solution-processed radiative cooling glass. Science. 2023;382(6671):684-691. doi: 10.1126/science.adi2224 Not all sunglasses fit all faces. Everyone has a different face shape, such as a heart, square, oval, round, triangular, or diamond face. Identifying your face shape is crucial to finding the best sunglasses for men. Oval face

Availability is limited when it comes to certainwraparound sunglasses that curve around the head. Prescription sunglasses made with extreme curves typically distort vision. Dark color shades are best for sunny and bright days, whereas tinted hues such as yellow, rose, and amber are best for cloudy and gloomy days or for enhancing contrast. What are glasses without their lenses? The materials used in your favourite pair of shades can alter the quality of vision accordingly. Lenses for sunglasses are usually made of NXT polyurethane, acrylic, optical glass or polycarbonate-based materials. If you use your sports sunglasses , it is best to go for break-resistant ones. UV protection is unrelated to the color and density of the tint in sunglass lenses, so you can choose any lens color and darkness you like, as long as your optician verifies that the lenses provide 100 percent UV protection. Polycarbonate is impact-resistant, offers optical clarity, and it is cheap, light, and scratch-prone.

The photochromic lenses provide automatic sun-sensitive light adjustments for greater comfort outdoors. And the clip-on sunglasses can be conveniently stored in your vehicle for those bright, sunny days when you need darker lenses. UV and glare protection Round faces feature bigger foreheads and jawlines but with softer angles. Elongating styles slim and sharpen a round face. Oversized rectangular and square sunglasses provide depth to the round face. Aviators suit this face shape too. Heart faceWearing sunglasses that have UV protection can protect your eyes from the harmful effects of the suns rays. Moreover, sunglasses with polarized lenses can help to reduce the glare that causes eye strain when looking at bright surfaces on sunny days. The new technology, a microporous glass coating, can lower the temperature of the material beneath it by 3.5°C at noon. According to researchers, led by Liangbing Hu in the Department of Materials Science and Engineering, the coating has the potential to reduce a mid-rise apartment building’s yearly carbon emissions by 10%. The team report this ‘cooling glass’ in a paper in Science. For the ultimate prescription eyewear suitable for all lighting conditions, some opticians recommend eyeglasses with photochromic lenses and a frame with integrated magnetic clip-on sunglasses. Many optical shops and online eyewear retailers offer special discounts on prescription sunglasses. Light hues such as yellow/gold/rose/vermillion/amber work well in moderate to low light. Light-shaded coolers for men are perfect for skiing, snowboarding, and other snow sports. They increase depth perception, enhance contrast, and increase object visibility and brightness.

The coating works in two ways: First, it reflects up to 99% of solar radiation to stop buildings from absorbing heat. More intriguingly, it emits heat in the form of longwave infrared radiation into the icy universe, where the temperature is generally around -270 degrees Celsius, or just a few degrees above absolute zero. The development of the cooling glass aligns with global efforts to cut energy consumption and fight climate change, said Hu, pointing to recent reports that this year’s Fourth of July fell on what may have been the hottest day globally in 125,000 years. Finding new, more energy-efficient alternatives to traditional air conditioning systems could stand to make a significant dent in global emissions. Wine goblet, blue glass decorated with white and gold enamel, Iran, mid-19th century; in the Brooklyn Museum, New York. (more)Temperature control technologies such as air conditioning are a significant contributor to worldwide greenhouse gas emissions. According to recent calculations done by scientists at the National Renewable Energy Laboratory, air conditioning is responsible for releasing the equivalent of 1,950 million tons of carbon dioxide annually, or just under 4% of all global greenhouse gas emissions.