Re: [Phys-L] light bulb efficiency standards

[Chuck Britton <cvbritton@mac.com>]

The 60 W bulbs will indeed become more scarce as the year progresses.
They will however still produce 60 W HALOGEN bulbs that might still serve your needs.

The smaller bulbs you mention will not be affected.

I used to buy up really cheap strings of tiny incandescent ‘Holiday’ bulbs for workshops.

Very easy to see the filament etc.

CFL’s & LED’s are a whole ‘nother ball of wax with their Electronic Modules that let them run nicely on 120VAC.

LED’s are low voltage DC devices and CFL’s need to be ‘Current Limited’ to keep them from exploding.

On Jan 2, 2014, at 3:16 PM, Larry Smith <larry.smith@snow.edu> wrote:

> http://reviews.cnet.com/8301-17889_7-57616368/bulbageddon-is-upon-us
>
> Will I still be able to buy incandescent bulbs for batteries 'n bulbs labs and DC circuit labs?  For Pasco's CASTLE kits 
> http://www.pasco.com/prodCatalog/EM/EM-8624_castle-kit/index.cfm#featuresTab
> students are supposed to dissect a bulb and see the continuous conductive path through it.  We use little #14 and #48 bulbs as current detectors, but they are also supposed to play with a large 60 W bulb as well.  Will I still be able to get them for specialized purposes like physics labs, or will they really not be sold anymore at all?  Should I go buy a career's worth of bulbs and hoard them through until retirement?
>
> Should I care?  Can students learn the same things from CFLs or LED bulbs?
>
> Thanks,
> Larry
>
>
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