Oozing Goo - The Lava Lamp Syndicate

...or any color bulb, for that matter?

I noticed in HomeDepot the other day a large assortment of 25w and 40w bulbs, including a black light model. Now, I haven't had a black light bulb since the 80's, but it seems to me the thing burned hotter than a normal bulb. Was that just me?

Has anybody here tried this?

They also had red, orange, yellow, green, blue, and purple bulbs. I can't help but wonder if they all might work. I know I said elsewhere that I'd rather use gels, but if these bulbs work well then they are fairly cheap, and readily available to me.

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I don't see why the different colored bulbs wouldn't work. The bulbs should have the same type of filament, so the same type of heat should be put off. It should give you different looks, lighting wise, when turned on. I've never tried different colored bulbs, so I'm kinda guessing here. 

It's hard to say, because the one I had was a brand unto itself. There's no telling what kind of filament it had in it. But these home depot bulbs are all by the same company...so it makes sense that they would all be the same, save for the coating on the bulb.

Sorry if this was kinda a dumb question, but I'd rather ask than risk shattering a globe or something.

Well, the black light uses a very very dark blue coating to absorb most of the lower frequencies and allow only the UV to go out.  The absorption of all that light is probably going to make the bulb run hotter than a 40w standard. 

I figure some of the heat transfer from the bulb has to be from the light being absorbed by the bottle/liquid/goo.  Lighter-colored goos may benefit from a blacklight, as more of the light is converted to heat by the bulb.  Darker goo might not see a whole lot of difference.  Worth a shot though. 

I have only found A-19 /E-26 base  bulbs.
Whatever you do, do not add UV Blacklight Luminescent liquid dye pigment to the fluid of a Lava Lamp 

it will explode from expansion

I thought the standard IS the 4.5"?
The 3" being an appliance bulb

It is too tall

The globe will wobble on top of the bulb

On a grande,its a  different story

only true BL wavelength is achieved from fluorescent anyway.

Incandescents just dont cut it

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