Comments

Author Comment Last activity Moderation
MrBumper "Sigh! well I wondered why I hadn't come across 'daylight' halogen before. It's cos they don't seem to be available in the UK, at least the Solux la..." | Read more » over 5 years ago
MrBumper "I've just looked at the Solux lamps. As far as I can see they are halogen lamps with built in blue filters. What a great find. I've tried daylight..." | Read more » over 5 years ago
MrBumper "This does look very promising. How was your spectrometer set up - blue dye removed from DVD-R grating ? (assuming you used a DVD-R), IR filter remo..." | Read more » over 5 years ago
MrBumper "I'm wondering if you took any account of the web camera settings - in particular colour temperature / white balance. This has quite a large effect ..." | Read more » over 5 years ago
MrBumper "I'd really like a stand alone version so I can store, organise and delete captured data and take measurements without an internet connection. If at..." | Read more » over 5 years ago
MrBumper "Matthew - I found that static soaking helps soften the dye. But then the dissolved dye just sits in solution above the surface of the DVD-R fragmen..." | Read more » over 5 years ago
MrBumper "Nice "out of the box" on the Spec 3 Stevie. You might find my research note - http://publiclab.org/notes/MrBumper/01-11-2015/preparing-a-dvd-r-to-a..." | Read more » over 5 years ago
MrBumper "As far as I know the guide groove on a DVD+R would be indistinguishable from that on DVD-R as far as using it for a diffraction grating is concerne..." | Read more » almost 6 years ago
MrBumper "I don't know if this will clarify anything, but I'm finding using a laser beam from a red laser pointer quite useful in examining what goes on with..." | Read more » almost 6 years ago