h a l f b a k e r y
Naturally, seismology provides the answer.
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There is something very pleasant about light reflected from a
pool of water, where ripples and eddies produce swirls of
brightness. However, having a pond indoors is often
MaxCo. has therefore developed its Ripply Light Device. It
consists of a short, wide cylinder of glass,
sealed at its top and
bottom ends. The top surface is slightly concave. The RLD is
partially filled with a viscous solution of glycerine, and is
intended to be rested on top of the shade of a regular lamp.
The heat from the bulb will cause water from the glycerine
solution to evaporate and condense on the concave upper
surface, from where it will periodically drip back into the
glycerine, producing langourously slow ripples. The light,
shining upwards through the RLD, will therefore be refracted
onto the ceiling in a satisfyingly ripply manner.
Prior art: existing ripple projectors
This appears to be an improvement at least in that there is no noisy motor. [notexactly, Jul 10 2019]
hb prior art
[2 fries shy of a happy meal, Jul 11 2019]
A Stereotypical example
Is this the pattern wanted? [wjt, Jul 11 2019]
||We would favour a device employing liquid mercury, electromagnets, and a vapour -discharge arc as the light source ...
||Yes, we thought you would. Now, if I can just ask you hold
these two wires here - I think it's switched off at the.... oh
dear whatapity nevermind.
||Ooooh, tingly ... mmmmmm .....
||It's been quite a struggle preventing 8th from
randomly throwing a brick into that water. You owe
me now! [+]
||[AfroAssault] posted something similar in '01. [link]
||Wow - so he/she did. Ah well.
||Now's your chance to include the new "brick in the water" variation as an added feature.
||I am not imagining the stereotypical light ripple. Merging droplet waves aren't visually the same as a complex background oscillating surface.