![sofi-03](https://astrosolar.com/wp-content/uploads/2014/10/sofi-03-200x200.jpg)
Camera Obscura for observing a solar eclipse
Build with your children a “CAMERA OBSCURA” (a lensless lens) cut a rough rectangle in the format ca 40cm x 40cm (~ 16″ x 16″) from a cardboard (e.g. part of a shipping box) – accuracy is NOT required Approximately in the middle of the cardboard (or the carton piece) please cut a hole with […]