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  1. Duster

    7th Grade Science Fair Project

    High power lab quality 500mW green laser, build that some day! Specification: Range: 200 miles Continuous output power: 500mW class 3B Laser diode: 2 watts Power: Mains 120v/240v power supply, (included) Dimensions: 170 X 80 X 60mm Laser life: Over 20,000 hours Wave length: 532nm...
  2. Duster

    7th Grade Science Fair Project

    This is the diagram we are using, it may not be the best we could be using.
  3. Duster

    7th Grade Science Fair Project

    Hello everyone, Dakota is starting his report. Just the basics mind you. Have a few questions. He as written: Three basic components of a laser. pump source, gain medium, optical resonator. (correct?) Our question is: Is the Pump Diode the Pump source? The pump source provides energy to...
  4. Duster

    7th Grade Science Fair Project

    Been working on the mill all day. My friend flies RC Helicopters. When he has a tough landing the main shaft can get bent, just ever so much, then it vibrates any where from a little to real bad. He has a bunch of bent ones, 50 or so. (I think he needs to work on his landing a little more)...
  5. Duster

    7th Grade Science Fair Project

    Good Idea, tonight his is at his moms and over this weekend. But he knows about you guys already. Looking forward to next week when he will be home.
  6. Duster

    7th Grade Science Fair Project

    Like the idea of combining lasers, that will be very cool. Just wait until next years 8th grade science fair, I see it now, in walks Luke Skywaker (Dakota France)
  7. Duster

    7th Grade Science Fair Project

    Thats cool, we will give that a try for sure, thanks Rob
  8. Duster

    7th Grade Science Fair Project

    WE Popped a Balloon TONIGHT! I talked with Hemlock_Mike today and he thinks they may have sent us a 40mW laser by mistake insteed of the 5mW. The other lasers we have wont pop any balloons. So Dakota is very happy about this and we can move on with more testing. Dakota still needs to write...
  9. Duster

    How I almost lost my vision...

    We are very new to lasers. My son who is 12 will be reading these posts. Heck I was not aware of these dangers. I have read every post here and done some research and convinced of the precautions that must be observed. He has had gun safety and hunter safety, handles a gun only around me...
  10. Duster

    7th Grade Science Fair Project

    We will see how this goes, by next year he will be in 8th grade and we could do some additional testing with more power for sure. What a great field to get into at a young age. Keep your finders crossed!
  11. Duster

    7th Grade Science Fair Project

    Not sure how much thrust, I did get it to move on its own which was an accomplishment. It is noisy for sure, I had the sheriff come the the house once. There had been a complaint that "Someone" was running a jet engine. That was me I said, he really liked it but said not to run it on Sunday's...
  12. Duster

    7th Grade Science Fair Project

    His project is due Febuary 12th.
  13. Duster

    7th Grade Science Fair Project

    Hey if you want you can check us out at Youtube, I have a few videos. One is of my Turbojet engine I built, my car, (1970 Plymouth Duster) just type in, zoocat123
  14. Duster

    7th Grade Science Fair Project

    Oh, where would you buy the goggles? I can find them but what would you recommend?
  15. Duster

    7th Grade Science Fair Project

    See there ya go, I learned something again today, thanks so much. He will run some more tests. Then see what happens.
  16. Duster

    7th Grade Science Fair Project

    We are using two 1.5v C8 Duracell batteries per laser. I wanted each laser to have its own power supply.
  17. Duster

    7th Grade Science Fair Project

    Is this a good one? DealExtreme: $20.15 True 50mW Green Laser Pointer Pen Black
  18. Duster

    7th Grade Science Fair Project

    I will do that, can I order the laser from DX right? And thank you for your offer. I will let you know when I get the laser, I posted some more pics, these are of Dakota.
  19. Duster

    7th Grade Science Fair Project

    thats cool, I think we will look into that. Where did you get all the components for doing that? Like the 2" FL plastic lens?
  20. Duster

    7th Grade Science Fair Project

    Learning curve! yes you are so right. But then we did get to mess up a bunch of cheap lasers, that was kind of fun for the price.


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