On TechRepublic: Windows 7: Slower to boot than Vista?
BNET Business Network:
BNET
TechRepublic
ZDNet
Fresnel lens

An early science lesson for many kids comes when a magnifying glass in the sun sets twigs (or hapless bugs) aflame. Aimed the right way, this 3x4-foot Fresnel lens from a rear projection television can melt a penny into a puddle within several seconds. (In this picture, it's harmlessly trained on company CEO Philip Cable.) The $130 lenses are among the most popular items sold by American Science & Surplus, which tracks 4,000 items in a SQL database.

Regular customers include aficionados of magazines such as Make and ReadyMade, the stars of of Mythbusters, and set dressers for movies, TV shows, and stage plays.

  • Talkback
  • Most Recent of 1 Talkback(s)
most of my problems are now solved - yaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa  tjl35@... | 03/27/08

What do you think?

advertisement

More ZDNet Photo Galleries

SmartPlanet

  • Thought-provoking progressive ideas on diverse topics that intersect with technology, business, and life, and matter to the world at large. Visit SmartPlanet
  • More from IBM
  • Innovate your business' process model, play against the market, compete against others on our scoreboards and WIN! Try INNOV8 2.0: A BPM Simulator
  • Enabling Real-World Business Transformation through IBM Service Management Read the EMA Analyst Report
Click Here