抛物线的光学性质:所有从焦点�出的光经过反射会平行射�远方。怎么用平面几何证明? 知乎 Template




You need a modern browser try chrome, to view this.

Background image: Hide Show

View Larger Image Image Credit: zhihu.com






Try and sketch some of theseBirdhouse, Fishing net, Axe, Cherry tree, Bat, Scorpion, Strawberry, Panda, Pumpkin, Flea, view more ideas


please wait, the page is loading...

More Sketches

Take a peek at some of the sketches created by our users, are you a sketchite?

anonymous
anonymous
sketch #5088


anonymous
anonymous
sketch #3810


sketchmaster
sketch #2619 Underwater by sketchmaster


anonymous
anonymous
sketch #5361 Emma Watson by Glynis June Williams


Rachel Roe
sketch #33 Flutter-bys


anonymous
anonymous
sketch #5052 Gorillaz by Rafał Dawid


anonymous
anonymous
sketch #3505 Django


anonymous
anonymous
sketch #2977 Spongebob Germaine Hoens


anonymous
anonymous
sketch #4582 Pikachu by Mariana Sanchez Acevedo


anonymous
anonymous
sketch #1138


anonymous
anonymous
sketch #5248


Donara Smbatyan
sketch #1449 donara


anonymous
anonymous
sketch #5011


anonymous
anonymous
sketch #4888


anonymous
anonymous
sketch #3242 Jolteon by Välë Chäpärrö Järämïllö


anonymous
anonymous
sketch #4190


anonymous
anonymous
sketch #3755 Panda by Roberto Castro Colimil


anonymous
anonymous
sketch #4724 Turtwig by Mark Robson


sketchmaster
sketch #2636 Robitina by sketchmaster


Tom Kelly
sketch #15


anonymous
anonymous
sketch #4734 Timon by Anh Vu


anonymous
anonymous
sketch #5064


anonymous
anonymous
sketch #5269


BaGaz Anggara
sketch #2836 Angry smurf maradona by BaGaz Anggara


anonymous
anonymous
sketch #2866 Soul Eater by Ani Chachua


Jorge Valero
sketch #2735


anonymous
anonymous
sketch #5121

tomski抛物线的光学性质:所有从焦点�出的光经过反射会平行射�远方。怎么用平面几何证明? 知乎 coloring