Documents Rotating Head Periscopes Why U-boat Captains Have To Spin In Circles These periscopes are resource.....

Slide 1Rotating Head Periscopes Why U-boat Captains Have To Spin In Circles These periscopes are resource material to support parts of STAO’s ScienceWorks Grade 10 Optics…

Documents Seeing Things Making Kaleidoscope Mirrors

Seeing Things Making Kaleidoscope Mirrors Long narrow glass mirrors work best but are more difficult to work with than plastic mirrors. If the back is covered, they will…