Bottle light inventor proud to be poor
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Re: Bottle light inventor proud to be poor
#2"The lamps work best with a black cap..." - why would that be so? Wouldn't a reflective cap work well too?
Re: Bottle light inventor proud to be poor
#3True hacker, if I ever saw one.
Re: Bottle light inventor proud to be poor
#4"The lamps work best with a black cap..." - why would that be so? Wouldn't a reflective cap work well too?
All I can think of is that a black cap won't degrade as quickly because of ultraviolet exposure. Most plastics (long polymers) have chemical bonds that can be broken by the energy level provided by ultraviolet photons, so over time they turn from polymers into quasicrystals and lose their strength -- disintegrate. But a black plastic, by excluding the ultraviolet light, protects itself and lasts much longer.
So a bottle that's composed of a clear plastic that naturally resists ultraviolet degradation (there are several) should be capped by a more rigid plastic (to maintain its shape). So the cap needs to be black (or at least a dark color).
A reflective cap would work just as well at first, but plastics are made reflective by being painted, and the paint soon falls off, because of ... wait for it ... ultraviolet exposure.
Re: Bottle light inventor proud to be poor
#5Neegers.
God says...
Virtual-Notary.Org hereby notes that on Date: Monday August 12, 2013 20:34.18 EDT (UTC-0400)
a random drawing in the range [1, 100000], inclusive, based on a hardware source of true randomness, yielded the following decision.
Random Value: 35249
God says...
Pelaiah, and Akkub, and Johanan, and Dalaiah, and Anani, seven.
4:1 The sons of Judah; Pharez, Hezron, and Carmi, and Hur, and Shobal.
4:2 And Reaiah the son of Shobal begat Jahath; and Jahath begat Ahumai, and Lahad. These are the families of the Zorathites.
4:3 And these were of the father of Etam; Jezreel, and Ishma, and Idbash: and the name of their sister was Hazelelponi: 4:4 And Penuel the father of Gedor, and Ezer the father of Hushah. These are the sons of Hur, the firstborn of Ephratah, the father of Bethlehem.
4:5 And Ashur the father of Tekoa had two wives, Helah and Naarah.
4:6 And Naarah bare him Ahuzam, and Hepher, and Temeni, and Haahashtari.
These were the sons of Naarah.
4:7 And the sons of Helah were, Zereth, and Jezoar, and Ethnan.
4:8 And Coz begat Anub, and Zobebah, and the families of Aharhel the son of Harum.
4:9 And Jabez was more honourable than his brethren: and his mother called his name Jabez, saying, Because I bare him with sorrow.
Re: Bottle light inventor proud to be poor
#6Or you could just open a window.
Re: Bottle light inventor proud to be poor
#7Did someone told him about « windows » ?
Re: Bottle light inventor proud to be poor
#8Or you could just open a window.
I think you’re not really understanding the kind of housing this is made for. Shacks in slums don’t generally have nice triple glassed windows.
Re: Bottle light inventor proud to be poor
#9Did someone told him about « windows » ?
>Did someone told him about « windows » ?
"Most homes and businesses in the slums of Dhaka have no
power and no windows, so 80-90% of them hook up to
electricity lines illegally - and fall back on candles or
kerosene lamps during regular blackouts."Re: Bottle light inventor proud to be poor
#10This isn't an alternative to the light bulb. This is an alternative to the window for people living in slums that can't afford glass.