Answer :
Final answer:
Both Tech A and Tech B are correct; Tech A about the potential of UV light to cause 'flash burned' eyes and the need for protective goggles, and Tech B about UV's capability to cause sunburn without being felt due to its higher energy compared to visible light. Therefore the correct answer is C)
Explanation:
Both Tech A and Tech B are correct regarding the effects of ultraviolet (UV) light. High intensity UVB light can damage the eyes, potentially leading to a condition known as 'flash burned' or photo keratitis that can cause discomfort and long-term issues such as cataracts. This reinforces Tech A's assertion about the importance of wearing proper welding goggles to protect against UV exposure during activities like welding. Tech B is also correct in stating that UV light is not something we can feel; it has more energy than visible light and can lead to skin damage like sunburn even on cloudy days, emphasizing the need for proper skin protection. The ozone layer partially shields us from UV radiation, but the fraction that reaches the Earth's surface is still sufficient to cause these health issues.
