Look up and write down the thermal expansion coefficients for quartz and for zinc. Now suppose you want to build a high-precision telescope with a mirror that must be capable of keeping its exact size and shape under many different weather conditions. You can choose quartz, zinc, or one of the three metals you tested samples of today. Which will you choose, and why?Suppose you have a bimetallic strip made of aluminum and steel, . What will happen to the shape of the strip as you heat it? Describe
No. Quartz heaters emit infra-red, not ultra-violet. Many people confuse them. They are at opposite ends of the visible light spectrum. You have absolutely nothing to worry about, other than burning yourself if you touch it.
