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 theseTsunami, Carrots, Mobile, Flute, Walrus, Glitter, Marionette, Lawnmower, Maid, Mule, 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 #5307


anonymous
anonymous
sketch #3300


Rachel Roe
sketch #672 Snails pace


anonymous
anonymous
sketch #3572 Hate mondays by Malyi Link


anonymous
anonymous
sketch #5275


anonymous
anonymous
sketch #2862 Grumpy Cat


anonymous
anonymous
sketch #4766 The Little Mermaid by Zizou Aiman


anonymous
anonymous
sketch #5180


anonymous
anonymous
sketch #5440


يآآسر محمد
sketch #2818 Hellboy by يآآسر محمد


anonymous
anonymous
sketch #5315


anonymous
anonymous
sketch #4821 Johnny M. by Z Ionut Ady


anonymous
anonymous
sketch #4632


anonymous
anonymous
sketch #4493 Jimi Hendrix by Alex Stoun


anonymous
anonymous
sketch #5201 Ponyta by WatasHi Satemura Oke


anonymous
anonymous
sketch #5058


anonymous
anonymous
sketch #3362 The Boss by David Torre


anonymous
anonymous
sketch #4939 Zelda by Jeanie Wagenknecht


anonymous
anonymous
sketch #3670 Bugs Bunny by Jessica Column


anonymous
anonymous
sketch #3538


anonymous
anonymous
sketch #5264


anonymous
anonymous
sketch #5059 Edward Hopper&#;s &#;Nighthawks&#; by Rosanne Zammit


anonymous
anonymous
sketch #5154


anonymous
anonymous
sketch #1060


anonymous
anonymous
sketch #5139 Sick Sick Six Urs Stefan


Nassim Nouri
sketch #2765 Kratos by Nassim Nouri


anonymous
anonymous
sketch #3680 Infected Mushroom by Rohit Rahul


anonymous
anonymous
sketch #5257

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