They both look full spectrum. The "thickness" of the bands seem to be the same. The only difference is perhaps a slight darkening of the blue end.
Fluorescent microscopes supply a rather precise wavelength light for certain studies. The specific wavelength is ensured by filters. I wonder whether a device like this might be used to check the quality of the light source. As they age, they fail to produce the required intensity of certain wavelengths before the others. Bulent --------------------------------------------------------------------- http://patoloji.gen.tr http://celasun.wordpress.com/ http://www.flickr.com/photos/bc_the_path/ http://photo.net/photodb/user?user_id=2226822 http://www.pentaxphotogallery.com/artists/bulentcelasun Toine <to...@repiuk.nl>, 8 Mar 2019 Cum, 12:25 tarihinde şunu yazdı: > > Maybe a spectrophotometer. If you point it up towards a blue sky maybe the > rainbow isnt full spectrum and the second one is full spectrum? > > On Thu, 7 Mar 2019, 19:55 Bulent Celasun, <bulent.cela...@gmail.com> wrote: > > > I've found this tubular thing (9 - 22 cm in length, about 2 cm in > > diameter) in a thrift store. > > > > There is a single lens in each end. > > > > It has moveable parts like a mirror that rotates 360 degrees around > > the tube. During part of this travel it faces an oval hole on tube's > > wall where one can see a tiny prism inside which can intersect the > > tubular axis by moving a lever from outside. > > > > Directing the gadget toward a light source and looking at from the > > less populated end of the "tube" I see a typical rainbow. (Light > > travelling from one end to the other crossing the prism inside). > > > > Moving the lever properly while light reflecting from the mirror > > enters inside (and is reflected to cross the prism) makes two adjacent > > rainbows visible at the far end of the tube. > > > > Oh well! I am not sure if I was able to describe it... > > > > Anyway, I ask just out of curiosty. > > Has anyone ever seen something like this? > > > > https://www.flickr.com/photos/bc_the_path/sets/72157707409395914 > > > > Bulent > > --------------------------------------------------------------------- > > http://patoloji.gen.tr > > http://celasun.wordpress.com/ > > http://www.flickr.com/photos/bc_the_path/ > > http://photo.net/photodb/user?user_id=2226822 > > http://www.pentaxphotogallery.com/artists/bulentcelasun > > > > -- > > PDML Pentax-Discuss Mail List > > PDML@pdml.net > > http://pdml.net/mailman/listinfo/pdml_pdml.net > > to UNSUBSCRIBE from the PDML, please visit the link directly above and > > follow the directions. > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
