- Jul 8, 2007
Hey, I'll try to help out. First, yes, you do want a semi-powerful laser. The brighter, the more visible the image will be. If you have a very dark room you can perform the experiment it, lower power will be OK. 50mW should be visible up close (a few feet) or in a dim setting.Hi everyone,
I'm here after seeing all of the hullaballoo over these really cool laser microscope videos.
I am a high school biology teacher, and I would really like to perform this experiment in my classroom. I think it would be an incredible introduction to the world of single-cell organisms. (And I bet the physics teacher would be just as interested in the optics side of it).
Before I spend a bucketload on a super-fancy laser, however, I've got some questions:
Sorry if that's a lot of questions -- I'm just excited to get this in front of my kids. Any help you could provide would be great!
- I understand that you need a fairly high-powered laser, at least 50mW. Is that right?
- Are there any other technical specifications for the laser? I'm a laser newbie. Someone at work mentioned getting "single mode" lasers. Is this a requirement? Is the green color important?
- About how much should I expect to spend for such a laser? Do you have good recommendations for online stores?
- How replicatable is this experiment?
- How easy is it to focus the beam on the water drop?