如何用纯几何法证明共焦点椭圆、双曲线的这一光学性质? 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 theseGazebo, Planet, Banjo, Miniature horse, Icepack, Mission, Lily, Palm tree, Hippo, Quill, 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 #3496


anonymous
anonymous
sketch #5186


anonymous
anonymous
sketch #2939 Eye by Kimmy Kitty Perry Priemus


anonymous
anonymous
sketch #3476 Happy valentines day! Simona Honigmelone


Donara Smbatyan
sketch #1435 donara


anonymous
anonymous
sketch #1168


anonymous
anonymous
sketch #600


anonymous
anonymous
sketch #2197


anonymous
anonymous
sketch #4595 Hell Boy by Cristina Love


anonymous
anonymous
sketch #4907


anonymous
anonymous
sketch #1257


anonymous
anonymous
sketch #3473 Finn by Luana Santos


Lucy Barnard
sketch #249 Rocket


anonymous
anonymous
sketch #5181


anonymous
anonymous
sketch #20215 Desert


anonymous
anonymous
sketch #3693 Lucy from Elfen Lied by Simona Honigmelone


anonymous
anonymous
sketch #5278 Cosmos by Jenna Khoùlix�


Amazigh N Amurwakuc
sketch #2359 imazighen amazigh flag


anonymous
anonymous
sketch #5235


anonymous
anonymous
sketch #1652


anonymous
anonymous
sketch #3639


anonymous
anonymous
sketch #3554 Dr. House by Carrieann Benthem


anonymous
anonymous
sketch #5209


anonymous
anonymous
sketch #5267


sketchmaster
sketch #2464 Spongebob by sketchmaster


anonymous
anonymous
sketch #5002 Jimi Hendrix by Piter Olimpo


Donara Smbatyan
sketch #1551 donara

tomski如何用纯几何法证明共焦点椭圆、双曲线的这一光学性质? 知乎 coloring