7 Pinhole Tube and Telescope Instructions: Follow Parts I-IV to explore simple optics. Complete the questions (Q1-Q35) on a separate piece of paper and the provided Observing Log Sheets. Work with your group but submit your work separately. Due: in one week, at class time Part I: Pinhole Purpose: To build a pinhole tube and use it to make a terrestrial measurement. Materials: rubber bands 2 nesting cardboard tubes 200-watt, unfrosted light-bulb lamp straight pin 2 stands aluminum foil clamps ruler (may be on protractor) calculator tracing paper measuring tape Pre-lab Question-What do you think? On your separate piece of paper, write your best estimate, based on your personal experience. Q1) How many Sun-diameters fit between Earth and the Sun?