xkcd #3183: Pole Vault Pole

xkcd #3182: Telescope Types

xkcd #3181: Jumping Frog Radius

xkcd #3180: Apples

xkcd #3179: Fishing

xkcd #3178: Hyperacute Interdynamics

xkcd #3177: Chessboard Alignment

xkcd #3176: Inverted Catenaries

xkcd #3175: Website Task Flowchart

xkcd #3174: Bridge Clearance

xkcd #3173: Satellite Imagery

xkcd #3172: Fifteen Years

xkcd #3171: Geologic Core Sample

xkcd #3170: Service Outage

xkcd #3169: EPIRBs

xkcd #3168: Beam Dump

xkcd #3167: Car Size

xkcd #3166: Big and Little Spoons

xkcd #3165: Earthquake Prediction Flowchart

xkcd #3164: Metric Tip