Re: Lamp as artificial sun?

KLP wrote:
Hi all,

I am for a laboratory setup looking for a lamp with a spectrum and intensity as close to the sun as possible.

I have on different websites found references to HPS lamps mostly used for plant growth (Cannabis etc. -:)

Has anybody ecperiece with such lamps regarding stability (both spectrum and intentisty). Recommendations of specific lamps are very welcome!

Do you want to simulate sunlight inside or outside the earth's atmosphere? For outside a xenon short arc lamp is probably the closest that's reasonably affordable. For inside the earths atmosphere a xenon arc lamp would need to be filtered to remove the UV short of around 300 nm.

You might also consider using a two mirror heliostat. The light from that mimics the sun very well since it is sunlight. The downside is it only works in the daytime and when there's no cloud cover. At least it's quiet and takes very little power to operate.
.

Relevant Pages

  • Re: Plastic face shields and UV rays
    ... Um, actually, UVA causes sun tans and wrinkles, while UVB causes sun burns and skin cancer. ... UVA, UVB, and UVC did not originally refer to different bands of UV energy; they originally were medical terms for different kinds of ultraviolet LAMP. ...
    (rec.motorcycles)
  • Re: Question for the guys
    ... is very powerful full spectrum light. ... a big tungsten-halogen lamp, ... So is the glare from the sun. That's why you don't look at it. ...
    (alt.support.diabetes)
  • Pics: Mirandas Tanning Salon + something else
    ... The days are getting shorter here in Finland and I only get sun for a few hours in the afternoon in my flat, so I have to turn on the lights. ... I got a new little lamp for my desk. ... Marina, Miranda and Caliban. ...
    (rec.pets.cats.anecdotes)
  • Re: Using the sun to send a message
    ... > We build a big shield around the sun. ... > like a lamp. ... Yeah, maybe that's what all these "Extra Solar Planets" that are becoming as ...
    (sci.physics)
  • Re: handheld spectrometers sp64 of Xrite and 2600d of Minolta
    ... filters and does indeed interpolate to 31 points because ... So there are two main differences: incandescent lamp & interference ... versus xenon lamp and grating spectrograph. ... the long-wavelength visible spectrum. ...
    (sci.engr.color)