Glass noodles are transparent because they are made from mung bean starch or sometimes from other starches like yam or potato. These starches are processed and formed into thin, transparent noodles that become translucent when cooked. The lack of color in the starch used to make glass noodles is what gives them their transparent appearance. **

The lotus effect on a glass roof works by utilizing the unique surface structure of lotus leaves. The leaves have microscopic bumps and waxy coating that repel water and dirt, causing them to bead up and roll off the surface. When this effect is replicated on a glass roof, it creates a self-cleaning mechanism where water and dirt are unable to adhere to the surface, making it easier to maintain and keeping it looking clean for longer periods of time. This effect is achieved through the application of hydrophobic coatings that mimic the lotus leaf's surface structure. **

To make frosted glass transparent, you can use a glass cleaner or vinegar solution to remove the frosted coating. Gently scrub the glass with a soft cloth or sponge to help break down the frosting. Rinse the glass thoroughly with water and dry it with a clean towel to reveal the transparent surface. Alternatively, you can use a glass polish or restoration kit to remove the frosting and restore transparency to the glass. **

One way to make frosted glass transparent is by using a glass cleaner or vinegar solution to remove the frosted coating. Gently scrub the glass with a soft cloth or sponge to help break down the frosted layer. Another method is to use a fine-grit sandpaper to lightly sand the frosted surface, which can help to restore transparency. Additionally, applying a clear coat of varnish or lacquer over the frosted glass can also help to make it more transparent. **

It is not recommended to eat expired Lotus coffee biscuits as they may have lost their freshness, flavor, and texture. Consuming expired biscuits can also pose a risk to your health as they may have developed mold or bacteria. It is best to discard expired Lotus coffee biscuits and purchase a fresh batch for consumption. **

Glass reflects light because of the difference in the refractive index between the air and the glass. When light hits the surface of the glass at an angle, some of it is reflected back due to this difference in refractive index. This reflection creates a mirror-like effect, making the glass appear reflective even though it is transparent. **

Public toilets should not be made entirely of transparent glass as it would compromise people's privacy and make them feel uncomfortable. Everyone has the right to use the restroom in a private and secure environment. Transparent glass toilets could also pose safety concerns and increase the risk of vandalism. It is important to prioritize the comfort and safety of users when designing public facilities like restrooms. **

The most transparent glass in the world is known as "invisible glass" or "ultra-clear glass." This type of glass is made using a special manufacturing process that removes impurities and minimizes the presence of iron, which is the main cause of the greenish tint in regular glass. As a result, ultra-clear glass allows more light to pass through, making it appear almost invisible. This type of glass is often used in high-end architectural and design applications where maximum transparency is desired. **