GeoBulb Arrives

Submitted by Bill St. Clair on Wed, 28 Oct 2009 18:02:47 GMT  <== Science/Technology ==> 

I received today from C. Crane my first GeoBulb. It's a GeoBulb II in cool white. Standard Edison socket, 60 watt equivalent light, draws 7.5 watts, 30,000 hour life, $50 plus shipping. The bulb is quite heavy, relative to the incandescent bulb it replaced. It's cool to the touch when illuminated. Nice white light. It buzzes softly, but I only hear it if I put my ear within a few inches. Won't be able to fully judge it until the sun goes down, and when I discover if it really does last for three years, but so far I'm happy with it.

GeoBulb Box
GeoBulb Box

GeoBulb made in China
Made in China

GeoBulb protection

GeoBulb and Full Spectrum Bulb
With my old full spectrum incandescent bulb

GeoBulb Illuminated
In my 35-year-old desk lamp

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Comments (4):

How's the white balance

Submitted by DaveP on Fri, 30 Oct 2009 10:06:13 GMT

So is it white? Or some weird off-white that feels unnatural?

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It looks pretty white to me

Submitted by Bill St. Clair on Fri, 30 Oct 2009 12:55:26 GMT

It looks pretty white to me. I took a photo of a silver dollar on top of a white piece of paper. It's here (66K). The paper looks gray. But that was during the day, so some of the illumination was sunlight from outside. When I think of it, I'll take another one at night.

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Submitted by DaveP on Fri, 30 Oct 2009 19:51:30 GMT

Hard to say for sure. It's got a little color-cast according to the histogram, but I can't tell what sort of white-balance adjustment your camera might have done. Looks like it might be usable, though.

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Submitted by DaveP on Fri, 30 Oct 2009 19:57:50 GMT

Ahh, here's the data sheet:

Looks like it's got a bit of a goofy curve. Probably okay for reading, but not for anything color-sensitive, so I couldn't use it near the computer / printer.

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