Thursday, 12 March 2020

Fire and Light


Introduction

Before the discovery of electricity, the only practical way for humans to create light was through fire. Thus for generations, there was no great need for poskim to question whether various halachos involving light require (or forbid) light from a fire – there simply was no other option.

With the invention of the lightbulb, a large number of new halachic questions needed to be evaluated. Is turning on such a light on Shabbos akin to lighting a fire? Can electric light be used for Shabbos lights, Havdalah, Chanuka or searching for Chametz on Erev Pesach?

In all of these cases, there are really two questions involved:

1)      Is any light is good enough, or do we require a fire?
2)      Even if a fire is required, does an electric light count as a fire?

The answer to the first question will likely be different in each case. It may be obvious that only making a fire is included in the melacha of Ma'avir (burning) on Shabbos; intuitively there is no obvious reason to require a fire in order to search for Chametz.[1] Each of the halachos must be examined separately, and no scientific knowledge is required.

Regarding the second question, logically the halachic definition of fire should be constant throughout. The question is only whether electric light fits the definition, and to answer this some scientific knowledge may be necessary. Of course, there may be room to differentiate between the various different types of lightbulbs and heating elements available.

What is a Fire?

The gemara deals with this question explicitly in the context of lesser known halachos – those of tzara'as (ritual 'leprosy'). One of the types of tzara'as mentioned in the Torah is when an affliction appears on a part of the skin that was burned by fire.[2]

The gemara derives from the pesukim that this type of tzara'as applies even if the afflicted area of skin was burned by a hot coal, or other hot substances. The gemara then questions the need for this derivation- as a burning coal is also on fire, why would there be any reason to distinguish? The gemara concludes that the pesukim are teaching us that even skin burnt by a glowing hot piece of metal is included, despite there being no fire involved.

This is then questioned further. One of the four methods in which the death penalty is administered is through burning.[3] This is achieved by forcing the guilty person to swallow a glowing strip of lead. If hot metal is not considered 'fire,' how can this method fulfil the requirement of burning the guilty to death in fire?

The gemara answers that in this case no fire is required – other methods of burning are acceptable (in fact this is the only acceptable method, as the gemara derives there). This is derived from the extra word תשרף (You shall burn) used in reference to this death penalty. Although the word אש (fire) is also used, this merely teaches us that the hot lead must be heated using fire.[4]

From this gemara it would appear that while glowing hot metal 'burns,' it is not considered a 'fire.' The conclusion should be that the light and heat given off by incandescent lightbulbs and most heating elements (which are essentially pieces of hot metal), do not meet the halachic criteria for a fire. Thus we have answered the second question above.[5]

Electric Light on Shabbos

Based on the above, it should be clear that turning on an electric light is not included in the Biblical command:

לֹא תְבַעֲרוּ אֵשׁ בְּכֹל מֹשְׁבֹתֵיכֶם בְּיוֹם הַשַּׁבָּת:

(שמות לה, ג)

"You must not burn fire in any of your dwellings on the Shabbos day."

Shemos 35:3

This pasuk does not include burning through means other than fire. It should therefore be no surprise that the gemara permits 'extinguishing' a hot piece of metal in order to prevent public damage (even when lives are not in danger),[6] and that some Rishonim write explicitly that the melachos of burning and extinguishing do not apply to metal.[7]

However, the Rambam writes that heating up metal in order to purify it is a tolada (derivative) of the melacha of burning.[8] On Shabbos, the Torah forbids us to perform any of the 39 av melachos (primary forbidden activities) as well as actions broadly similar to these melachos. Thus although glowing metal is not a 'fire,' the Rambam feels that heating metal until it glows is potentially a Biblically forbidden derivative.[9]

It is unclear why the Rambam limited this tolada to heating up metal for the purpose of purification.[10] Some have suggested that this was only because in his time, there was no other purpose of heating metal to such high temperatures.[11] Nowadays, the Rambam would extend the tolada to turning on incandescent lightbulbs or heating elements that work in the same way.[12]

Of course, even if this is not the case, turning on incandescent lights on Shabbos constitutes a Rabbinic form of 'burning' as well as other potential violations.[13] The 'burning' question (excuse the pun) becomes particularly important concerning turning off these lights, when some of the other problems may not exist.[14] If turning on a light is not a tolada of burning, neither is turning it off a tolada of extinguishing.[15]

Shabbos Candles

Unlike the melacha of 'burning,' it is quite clear that the purpose of Shabbos candles is to create light rather than fire. Light is needed to ensure Shalom Bayis[16] and Oneg Shabbos.[17] However, one could theoretically still make an argument that as in the times of Chazal, the only way of making light was through fire, the institution was made to light a fire specifically.

I believe that such an argument is mistaken. While Chazal forbade lighting with certain types of wicks and oils (in general due to them not burning well),[18] we never find that they told us what we should use to light with. The clear implication is that any light is ok, with the exception of those on the forbidden list.

Chanuka

The mitzvah of lighting Chanuka candles is less straightforward. The purpose of these candles is to remember and publicise the miracle of Chanuka, which happened with the lights of the Menorah in the Beis HaMikdash, which required olive oil.[19] Even when the Third Beis HaMikdash is rebuilt, we certainly will not be able to use electric lights in the Menorah!

Presumably for this reason, there is a view in the gemara that the ideal way to light on Chanuka is using olive oil.[20] However, we are certainly not obligated to use olive oil and it is questionable to what extent we are required to imitate the Menorah in the Beis HaMikdash. It is possible that fire is needed as a minimum, although it is hard to prove either way.

Havdalah

After Shabbos, the beracha of בורא מאורי האש (the Creator of the lights of fire) couldn't be clearer. For this beracha, we certainly require both light and fire. From what we have written above, it should be obvious that electric light cannot be used.

The Mishna tells us that we cannot make this beracha unless we get benefit from the light.[21] Furthermore, we cannot make the beracha over a candle lit for respect alone, such as that customarily lit to accompany the dead.[22]

Based on this, I will end with an open question. Nowadays, no one I know lights a Havdalah candle in order to use its light. While there are some who turn off the electric lights so that the candle light is noticeable, there is ultimately only one reason that this candle is lit – in order to make the beracha. Is this not similar to a candle lit for respect alone, on which we do not make a beracha?


[1] Notwithstanding Pesachim 7b.
[2] Vayikra 13:24
[3] See Vayikra 20:14 and 21:9.
[4] Pesachim 75a
[5] As even incandescent light does not count as a 'fire,' the light emitted from florescent bulbs and LEDs (which are significantly cooler) certainly does not.
[6] Shabbos 42a. The implication is that the rabbinic prohibition is due to the apparent similarity to extinguishing a burning piece of wood.
[7] Piskei Rid there; Yere'im siman 274. This does not automatically follow from the law of extinguishing; even were glowing metal considered fire, its extinguishing may not have been Biblically prohibited. According to some views, the melacha of extinguishing is only violated when coal is created (see Shabbos 31b).
[8] Hilchos Shabbos 12:1
[9] Although there is no explicit source in the words of Chazal for this derivation or for any other tolada of the av melacha of burning, the gemara in Yevamos 6b takes it for granted that administering the death penalty by burning (using glowing metal as mentioned above), is Biblically prohibited on Shabbos. This gemara is a strong support for the view of the Rambam (see Avnei Nezer 229). Furthemore, the Rambam seems to have understood that all av melachos must have at least one tolada, which must be deduced from logic alone if necessary. See Hilchos Shabbos 10:8 for an example of this.
[10] See Maggid Mishne; Lechem Mishne; Avnei Nezer 229. See also Mincha Shlomo 1:12, who points out some flaws in the logic of the Avnei Nezer but is himself forced into a very difficult reading of the Rambam's words.
[11] Ovens were not made of metal until relatively recent times.
[12] See http://www.ybm.org.il/Admin/uploaddata/LessonsFiles/Pdf/476.pdf. See also Amud Hayemini. Siman 27, for a similar idea.
[13] These include the melacha of cooking according to the Ra'avad (on the Rambam there) as well as any possible transgressions involved in the use of any electricity on Shabbos (see Shabbos and Shevus). All of these need to be considered when dealing with any complex question about the use of these kind of lights on Shabbos and Yom Tov.
[14] For example, stopping something from cooking is not a melacha.
[15] Although the converse is not necessarily true – see footnote 7 above.
[16] See Shabbos 23b
[17] See Midrash Tanchuma at the beginning of Parshas Noach. My view is that one should not make a beracha when lighting candles in a room where there is plenty of electric light already – these candles will have no practical use (even if they serve a decorative purpose, this was not the purpose of the mitzvah). A simple solution is to turn off the lights before making the beracha, and include both the electric lights and the candles in the mitzvah (in reality there is no need for the candles, but which Jewish woman would accept that?)
[18] As is detailed in the second perek of Maseches Shabbos.
[19] See Shemos 27:21.
[20] Shabbos 23a. This is also the way the Rema rules (Orach Chaim 673:1; See also Shulchan Aruch Orach Chaim 264:6, who writes that olive oil is the best oil to use for Shabbos candles due to it producing a clean light).
[21] Berachos 51b; see also gemara there 53b.
[22] Ibid. and gemara there 53a.

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