This message follows up on some postings from last week. I heard news on the radio this morning that the Memorial Gallery, an art museum in Rochester, is using a new bulb called 'Solis' (sic) that was developed by an engineer. Apparently, the National Gallery is also using this same bulb for the Van Gogh show on exhibition in Washington. As most curators prefer controlled natural lighting, previously only incandescent and fluorescent bulbs have been available.  A lighting consultant named Stephen Weintraub has studied the variations of light and found the Solis bulb to be the best available alternative to natural light.  It sounds like the light is not as yellow as most incandescent bulbs and lasts a long time too.  Hurrah for progress!