I want to model rays of light bouncing off a parabolic dish with technical drawing, How do I do it?
On a curve, I will gestimate a tangent to an arc and light bouncing off goes off it at the same angle as it hits it.
NO problem it the light arrives parallel to the plane of the dish but most of it will not arrive like this.
How do I do it? Just with elevation plan and sideviews and sections through the dish.
Thanks Brian It is in relation to