My sitting room has decorative lamps that benefit from clear, rather than frosted, bulbs, controlled by an old-fashioned (thyristor) dimmer. So I stocked up with bulbs while they were still available - enough to last at least as long as I do. Ironically, clear bulbs are one type that is still available... BTW, incandescent bulbs have a low luminous efficiency, they consume a lot of energy to produce a given amount of light, dissipating most of it as heat. This is usually described as waste heat - but it isn't! At least, not always. On winter evenings which, I suggest, account for most of our artificially lit hours, we have to heat out homes anyway, and this "waste" heat makes a small contribution towards it. We see calculations showing how much we can save by switching to solid state bulbs, but do they take account of this?
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