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 theseCandy Cane, Lemonade, Swinging bridge, Sea cucumber, Ticket, Couch sofa, Ice house, Pottery, Raccoon, Kiwi, 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 #970 Depression


anonymous
anonymous
sketch #21085 Tobirama by Enrique L. Manly


anonymous
anonymous
sketch #3344 Homer by Samuel Roberto


anonymous
anonymous
sketch #3157 umpa lumpa


anonymous
anonymous
sketch #1220


anonymous
anonymous
sketch #1328


anonymous
anonymous
sketch #5102 Old Man by Cuong Pham


anonymous
anonymous
sketch #3455 Enya by Georai Shahar


anonymous
anonymous
sketch #20690


anonymous
anonymous
sketch #4086 2lips


anonymous
anonymous
sketch #4682 Elvis Presley by Nassim Nouri


anonymous
anonymous
sketch #3510 Edward from FMA by Raman Chauhan


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


anonymous
anonymous
sketch #3071 Metallica - Kill &#;Em All by Dayana Aleman


Jaroslav Florian
sketch #135 TYGER Style


anonymous
anonymous
sketch #3447 Hidan (Akatsuki) by ßeyza Karaca


anonymous
anonymous
sketch #3676 Sceptical horse by Koes Maung


anonymous
anonymous
sketch #3148


anonymous
anonymous
sketch #4414


anonymous
anonymous
sketch #3505 Django


anonymous
anonymous
sketch #5224


Matt King
sketch #3330


anonymous
anonymous
sketch #3727 Stitch by Louis Tradieu


anonymous
anonymous
sketch #4749 Random Girl by Adellachamp Stand


anonymous
anonymous
sketch #3554 Dr. House by Carrieann Benthem


anonymous
anonymous
sketch #5077 Light of Hope by Itz Rakhi


anonymous
anonymous
sketch #2965 Flapjack by Farzin Hedayatzadeh

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