Questions tagged [lighting]

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Kiddush levana – intensity of moonlight required in areas of light pollution

The answer to this question came from Mishna Berura 426:3 which defines the light from the moon on which one can make the blessing as follows: ג) ונהנין מאורה - דהיינו בעת שזריחתה ניכרת ע"ג קרקע. ...
2
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0answers
51 views

Does Judaism use darkness and light as a metaphor for good and evil?

Many religions contrast dark and light with good and evil. Namely Christianity as a off shoot religion does exactly this in the new testament. Does Judaism use these metaphors directly in any verses ...
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0answers
70 views

Yom tov, showering and lights

I recently stumbled across a lighted showerhead at a store that purports to operate solely through water - without an external power source. The lights also change color with the temperature of the ...
1
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0answers
176 views

Custom to light yahrzeit candle on Erev Shabbos before the yahrzeit

Has anyone heard of a custom to light a yahrzeit candle not on the eve of the actual yahrzeit, but on the eve of the preceding Shabbos? I know that there are other customs for the preceding Shabbos, ...
1
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0answers
55 views

Why was only the light hidden at creation?

In Bereshis 1:3-4 God creates light and differentiates between light and dark. Chazal in Hagigah 12a each us that God saw the original light was not appropriate for the wicked to use and hid it away ...
1
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0answers
68 views

Greeks' gas lamps

I once heard that there is a source that says the Greeks invented gas lamps or some sort of street lights which enabled the Jews to roam the streets at night and not be with their families. The plan ...
1
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589 views

Calculation methods for intermediate time of chanukah lighting

We know that there are those who light chanukah candles at sunset and other at tzeis but there are some poskim lighting between at an intermediate time, for example : Rav Moshe Feinstein, Rav ...
-1
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1answer
92 views

Dimmer Lights on Yom Tov

On Yom Tov, we are allowed to adjust fire (i.e. change the strength of the stove) so long as we do not completely turn the stove on or off. Therefore, if a room’s lighting has a dimmer switch, would ...