Yes, I am familiar with the double-decker buses in London. They are an iconic symbol of the city and are a popular mode of transportation for both locals and tourists. The double-deckers offer great views of the city's landmarks and are a convenient way to get around. Many people enjoy riding on the top deck to experience the sights and sounds of London from a unique vantage point. **

A pair of sunglasses with polarized double lenses works by reducing glare and improving visibility in bright conditions. The double lenses are designed to filter out horizontal light waves, which are the main cause of glare, while allowing vertical light waves to pass through. This helps to reduce eye strain and improve visual clarity, especially when surrounded by reflective surfaces such as water, snow, or roads. The polarized double lenses also provide better contrast and color perception, making them ideal for outdoor activities and driving. **

When double swimwear is prohibited at a swimming pool, it means that individuals are not allowed to wear two layers of swimwear simultaneously. This rule is typically in place to maintain hygiene standards and prevent clogging of pool filters due to excess fabric. It also ensures that all swimmers are following the same safety guidelines and are not hindered by excessive clothing while in the water. **

When double swimwear is prohibited in a swimming pool, it means that individuals are not allowed to wear two layers of swimwear simultaneously. This rule is typically in place to maintain cleanliness and hygiene standards in the pool, as wearing multiple layers of swimwear can trap dirt, bacteria, and other contaminants between the layers. Additionally, double swimwear can impede proper swimming movements and increase the risk of accidents or injuries in the pool. It is important to adhere to this rule to ensure a safe and enjoyable swimming experience for all pool users. **

Doubling the height of an object or structure means increasing its vertical measurement by a factor of two. This would result in the object or structure being twice as tall as it was before. For example, if a building is 50 feet tall and its height is doubled, it would then be 100 feet tall. This type of change can have significant impacts on the appearance, functionality, and stability of the object or structure. **

Doubling the radius of a circle means increasing the distance from the center of the circle to any point on its circumference by a factor of 2. This also means that the diameter of the circle will be doubled, as the diameter is equal to twice the radius. As a result, the area of the circle will be quadrupled, and the circumference will be doubled. **

Yes, 90s fashion, sunglasses, and swimwear have made a comeback in recent years. Many fashion trends from the 90s, such as high-waisted jeans, crop tops, and slip dresses, have become popular again. Additionally, 90s-inspired sunglasses, such as small oval frames and colored lenses, have become trendy once more. As for swimwear, high-cut one-piece swimsuits and retro bikini styles reminiscent of the 90s have also become popular choices. Overall, 90s fashion, sunglasses, and swimwear have definitely made a comeback in the fashion world. **

Double-glazed windows have an advantage over double windows because they are specifically designed to provide better insulation and energy efficiency. The two panes of glass in double-glazed windows are separated by a layer of air or gas, which helps to reduce heat transfer and minimize the loss of indoor heat during the winter and the entry of outdoor heat during the summer. This results in lower energy bills and a more comfortable indoor environment. Additionally, double-glazed windows also provide better sound insulation compared to double windows, reducing outside noise and creating a quieter living space. **