Build a lesson around any TED-Ed Animation, TED Talk or YouTube video
Create a Lesson

Can you solve the vampire hunter riddle? - Dan Finkel

  • 1,033,409 Views
  • 2,302 Questions Answered
  • TEDEd Animation

Let’s Begin…

You’ve stealthily descended into the darkness of a vampire cave, setting a sequence of mirrors as you go. When the sun reaches the right angle in the sky, a beam of light will ricochet along the mirrors, strike a diffuser, and illuminate the great chamber where the vampires sleep. Can you place the diffuser correctly and flood the lair with sunlight? Dan Finkel shows how.


Customize This Lesson

85

Create and share a new lesson based on this one.

About TED-Ed Animations

TED-Ed Animations feature the words and ideas of educators brought to life by professional animators. Are you an educator or animator interested in creating a TED-Ed Animation? Nominate yourself here »

Meet The Creators

  • Educator Daniel Finkel
  • Director Igor Coric
  • Narrator Addison Anderson
  • Character Designer Igor Coric
  • Animator Nemanja Petrovic
  • Editor Nemanja Petrovic
  • Producer Milica Lapcevic
  • Sound Designer Saso Puckovski
  • Content Producer Gerta Xhelo
  • Editorial Producer Alex Rosenthal
  • Associate Editorial Producer Bethany Cutmore-Scott
  • Fact-checker Brian Gutierrez
    • See more
1 ted ed books
Additional Resources for you to Explore
Interested in solving more riddles? Head on over to the New York Times to practice your problem-solving skills on another riddle by the educator.

To continue deep-diving into the world of math, check out Math for Love.

Customize This Lesson

Create and share a new lesson based on this one.

About TED-Ed Animations

TED-Ed Animations feature the words and ideas of educators brought to life by professional animators. Are you an educator or animator interested in creating a TED-Ed Animation? Nominate yourself here »

Meet The Creators

  • Educator Daniel Finkel
  • Director Igor Coric
  • Narrator Addison Anderson
  • Character Designer Igor Coric
  • Animator Nemanja Petrovic
  • Editor Nemanja Petrovic
  • Producer Milica Lapcevic
  • Sound Designer Saso Puckovski
  • Content Producer Gerta Xhelo
  • Editorial Producer Alex Rosenthal
  • Associate Editorial Producer Bethany Cutmore-Scott
  • Fact-checker Brian Gutierrez
    • See more
1 ted ed books

More from Math in Real Life