11 Responses

1. It works:-)

2. hey dan : ) if I had a big block of metal and charged it up with lots of heat by a Fresnel lens all day long ( with insulation around the back/sides.. then as the sun goes down fully wrap insulation all around to store the heat and wheel it into my living room.then maybe, I could unwrap the hot block of metal late at night and use it as a radiator to heat up a room? it would be free heat! really efficient too, depending on the insulation method used. what do you think?

3. I would like to request some louder sound :)

4. Hi Yes.

   It has a C option. We had an 89 day run of no sun here. I can only imagine. PV works in clouds, not as strong but that may help.

5. Hi, What can your Infrared thermometer read up to in Celsius? I would really love to do this as a water heater but I too live in Glasgow and it rains 90% of the time

6. I’m actually in Glasgow and I have no idea!
   the sun is shining lovely today tho :)
   how does one go about installing PV solar panels and will one quickly regain the initial investment

7. Hi,
   The Fresnel Lenses work based on quality sunlight and not outside temperature. This video was made at 18:00 when the sun is low on the horizon. If you have clear days without clouds, you can do the same thing. Also PV solar panels actually work better in cooler climates. If you have long periods of no sun then other options are necessary. Are you located in the Highlands? What would you estimates your average yearly sunshine is?

8. so i live in Scotland, we don’t have your climate,

   what can I do to become more energy self-sufficient?

9. that’s a bummer you maxed it out.

   i hear you can use a video camera to take extreme temperature measurements – by comparing the brightness to a chart.
   i guess you have to make your own chart up though.

10. Excellent! I love these Fresnel lens videos.

11. What make/model IR thermometer are you using? Thanks…