Recent content by Kompewt

Thank-you for pointing this out. I have always thought of the Lagrangian point as the point at which the net gravity of the Sun-Earth system was zero. This video explained the L points well.

Thanks for the reply mfb. I think I am also confusing focal length and focal point, but the solution I was given still doesn't make sense to me. If the image remains focused on the detector then the lens must change or the detector-lens distance must change. If the detector-lens distance...

Hi everyone, I have just finished my first year of physics. Looks like I should have come here sooner but I have been glued to Khan Academy and Michel van Biezen videos for the last 12 months. Looking forward to having a community of like minded people to be involved with. Regards, Andre.

Homework Statement An outdoor security camera has a simple lens with focal object length fo = 6.00 cm and perfectly focuses the image of a bird onto its detector located 9.00 cm away from the lens. The animal then flies away from the lens and the new focal distance is 8.00 cm. (a) How far did...