How To Observe The Sun Safely The Patrick Moore Practical Astronomy Series By Lee Macdonald 2012 07 31

How To Observe The Sun Safely The Patrick Moore Practical Astronomy Series By Lee Macdonald 2012 07 31

File Name: 349eca08b

Size: 41231 KB

Last Upload: 03, March 2019

Download Now Read Free

projecting the sun you can easily and safely observe the sun by projecting it through a tiny hole onto a white sheet of paper this simple device is called a pinhole camera