What is a good method to demonstrate the need for protective eyewear?

The method of shining a flashlight through fingertips effectively demonstrates the need for protective eyewear in a way that visually illustrates the concept of light exposure and the importance of eye protection. This example shows how light can pass through materials, similar to how UV rays from tanning equipment can impact the eyes.

By using a flashlight, one can visually represent the transmission of light, highlighting how the eyes are vulnerable during tanning sessions. It serves to reinforce the understanding that just as light can penetrate certain surfaces, so can harmful rays, making protective eyewear essential during tanning to guard against damage.

The other methods do not effectively communicate the same message about UV exposure. For example, shining a laser pointer at the eyes would be unsafe and could cause harm rather than demonstrate a protective measure. Regular sunglasses might not provide adequate protection against the specific wavelengths of UV light produced by tanning beds. Covering the eyes with a towel may block light temporarily, but it doesn't adequately represent the potential harm that can occur from UV exposure without proper eyewear. Using a flashlight through fingertips provides a safe, clear, and educational way to emphasize the necessity of protective eyewear when using tanning equipment.