Sun-Smart Innovations: Anti-UV Gear and Solar Power on the Go

The video discusses the dangers of sunburn and introduces anti-UV beach accessories like T-shirts and parasols that offer superior protection. It also explores a solar-powered backpack that charges devices using ambient light, inspired by photosynthesis. The video highlights the potential of dye-sensitized solar cells for generating electricity, even in low light, and their future applications in buildings.

What is the primary cause of the skin's red color when sunburned?

• Heat from the sun

• The sun burning the skin

• Dilation of blood vessels

• Melanin production

How much UV protection does an anti-UV T-shirt provide compared to a cotton T-shirt?

• No UV protection

• Equal UV protection

• More than 5% UV rays transmitted

• Less than 0.2% UV rays transmitted

What material is used in anti-UV T-shirts to enhance UV protection?

• Cotton

• Wool

• Ceramic microbeads

• Silk

What is the main advantage of the solar-powered backpack?

• It is waterproof

• It charges devices using ambient light

• It is lightweight

• It has a large storage capacity

Who inspired the design of the solar cells used in the backpack?

• Nikola Tesla

• Albert Einstein

• Thomas Edison

• Professor Michael Gretzel

What is a key feature of the solar cells used in buildings?

• They are opaque

• They are transparent

• They are heavy

• They require direct sunlight

How do the solar cells in buildings perform in shaded areas?

• They can light hundreds of bulbs

• They require additional power sources

• They work less efficiently

• They do not work