The Lawrence Hall of Science
The public science center of the University of California, Berkeley.
Wednesday - Sunday
10:00 a.m.–5:00 p.m.
We’ll bring our science programs to you.
We partner with school districts to support science learning. We offer district-wide elementary, middle, and high school programs, either virtually or in-person.
We collaborate with a range of partners to innovate in science education. Together, we go further.
In this activity, learners make their own pinhole viewer in order to measure the size of the sun. After using the viewer to project circular image of the Sun on paper, learners use ratios and an equation to calculate the Sun’s real size. Step-by-step instructions are included with photos along with important safety guidelines. This activity needs a sunny day, however an alternative is provided using the light from a tablet in a dark room. Activity guide includes a helpful section on the required equation and variables, and a “What’s going on?” explanation on how the pinhole viewer works.
Preparation Time: 5 minutes
Activity Time: 20 minutes
DIY Sun Science Measure the Sun's SizePDF
DIY Sun Science Mide el tamaño del SolPDF
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