Science Club
  1. Does Black Bark Mulch Help Keep Moisture in the Soil?
  2. How Much Water does a Fountain Use?
  3. Find your Body Surface Area
  4. How Fast do French Fries Cool Down?
  5. My Year of Coincidences
  6. Which Firework is the Loudest?
  7. Cost to store a VHS tape in a NYC apartment?
  8. Guess Your Blood Alcohol Level Booth
  9. Find the Loudest Restaurant in Sacramento
  10. How Much do Clothes Weigh?
  11. Trying to Make Clear Ice
  12. Searching the Indian Ocean for a Plane Crash
  13. Electronic Cigarettes - The Fog Machine for Your Face
  14. Scott Leased an Electric Ford Focus
  15. Testing the Effectiveness of a Beer Cozy
  16. Eggshells vs. Taco Shells
  17. How Ice Rinks are Made
  18. Shaken vs. Stirred
  19. Real Appliance Energy Use Tests
  20. Christmas Lights Power Cost
  21. The Best Cold Drink Cup
  22. LED vs. Regular Bulbs & CFLs
  23. Coldest drink in town?
  24. Using Salt to Cool Down Beer
  25. Coors Light Cold Indicator
  26. The Fastest Way to Cool Down Beer
  27. Hairdryer vs. Bowl of Water
  28. Bathroom During a Movie?
  29. Video Projector on a Disco Ball
  30. Cool Trunk
  31. The weight of popcorn
  32. Sunchips bag decomposition
  33. Disscating a cockroach
  34. Sensefly Drone Camera
  35. Entrance Locked
  36. End Rubbernecking
  37. Eyeclops Night Vision
  38. Miracle Fruit Taste Test
  39. Hot Air Bubbles
  40. Helium Bubbles
  41. Neighborhood Speed Trap
  42. Pizza Race
  43. Eyeclops - Bionic Magnifier
  44. Breathalyzer Testing
  45. Fishing Line Fiberoptics
  46. The Value of CFL Bulbs
  47. Barry Marshall Fan Page
  48. Bottling the Keg Leftovers
  49. Spinning Rim Centrifuge
  50. Backwash Experiments
  51. sidewalk chalk
  52. Red Hot Vioxx Action!
  53. Balloon Delivery
  54. Tanning
  55. Making a Candle Out of Lipstick
  56. Evaporation
  57. The lift of a Helium Balloon
  58. Lard Candle
  59. The Properties of Heat Transfer
  60. Insulation Testing
  61. Eating Out
  62. Eating In
  63. Tattoo Removal
  64. Drying Laundry
  65. Viscosity Testing
  66. Magazine Advertising
  67. Collecting Data
  68. Dropping Toast
  69. Refilling an Ink Cartridge
  70. Tampons
  71. Light Bulbs

How much is Inside?
Community & Citizenship
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Science Club
Incredible Stuff
How To Guides


Comparing LED light bulbs with Regular Bulbs and CFLs - Page 2

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I also need to mention the life-expectancy of these bulbs. Halogens and Incandescent bulbs have a short life expectancy. 2-3,000 hours. The CFLs last almost three times as long.

But the real champions are LED bulbs. They last a really long time, 25,000 hours or longer. The VOID LED bulbs are rated with a 40,000 hour lifetime. There's a reasonable chance you'll have to put them in your will.

The very long lifetime of the bulbs, coupled with energy savings makes LED bulbs very valuable. They are more expensive than halogens or CFLs.

The GE "Reveal" halogen bulb above was $13.97. It broke (internally) almost immediately and I returned it to the store. For the heat test and breakage tests below, I used a $5.99 incandescent "flood". Incandescent bulbs are actually going up in price as manufacturers stop making them.

The CFL bulb was $13.97 for a two pack, or $6.99 each.

The 12 Watt VOID LED bulb I tested sells for $39.

Heat Output
Incandescent bulbs are not very efficient at making visible light. A good portion of their power use ends up as heat. Sometimes this is a problem, such as when a bulb toasts the inside of a lampshade, or threatens to burn down your house when you use a higher-wattage than recommended for a particular light fixture. This extra heat isn't a problem when the heat is needed, such as when the lightbulb is warming a cold room, but in an already warm room, the bulb's unneccessary heat is often removed with air-conditioning, at a cost of even more electricity.

CFLs don't get as hot as incandescent bulbs, but they can still get hot. How do LED bulbs stand up against CFLs?

To test the heat output of these three bulbs, I conducted a test where each type of bulb would illuminate an ordinary wax candle, set one inch away. In 30 minutes, the heat from each bulb would assault the wax, maybe melting the side of the candle. I didn't light the candles.

The incandescent bulb became super hot and destroyed the candle in 30 minutes. I bet lampshades were originally designed to keep you from burning the crap out of your family.

Insurance companies should lower your rates when you get rid of these things.

The CFL bulb warmed up and its surface became hot, but it didn't visibly affect the wax candle.
The LED bulb, shown above was too heavy to be supported by the simple wall socket, so I had to prop it up with a jar of cocaine. The bulb surface became warm at the face and hot at the back.

Here are the results. There is no clear winner, but there is a clear loser. The candle placed in front of the incandescent bulb immediately started melting the wax. Just as the 30 minutes was up, the candle's structure had deteriorated to a point to where it was leaning over and couldn't recover. The wick down the center was exposed for a length of several inches.
Neither the candle in front of the CFL nor the LED bulb visibly melted the candle.


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  The Quest for a solid ice beer tray   Heat Transfer Experiments   Eyeclops Digital Magnifier   Trying to make hot air bubbles   Eyeclops Night Vision goggles   How to Eliminate Rubbernecking   My Homemade Speed Trap 
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