A pendulum clock gains 5 sec per day at 10°C and loss 6 sec per day when used at 40°C. Find the lenear expansivit of the pendulum.​

In this thread, i would like you to comment on the nature of light and how operation of telescopes. light has a duality of a particle and a wave; which one affects your life? also how does light interact with optics inside telescopic systems? answer these questions in two paragraphs. then respond the another students response.