Questions tagged [science]

questions about science in relation to Judaism

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11
votes
5answers
385 views

Does the colouring of animals depend on what the mother sees before conception?

What is the meaning of the strategies (hishtadlus) that Yaakov made with the conception of the animals starting at 30 (37)? Is it or was it a natural thing that the colouring of animals depends on ...
8
votes
1answer
1k views

Retention of urine causing infertility?

In several places in the Gemara (Yevamos 64b, Bechoros 44b) it is stated that holding back urine for an extended period can cause a man to become infertile. In the latter place the Gemara gives a ...
9
votes
3answers
1k views

Why does the Talmud assume a woman cannot get pregnant on the first act of intercourse?

There is a rule in the Gemara (Yevamot 34a) that אין אשה מתעברת בביאה ראשונה. The question is why the Talmud assumes that a virgin cannot conceive on her first act of sexual intercourse if the hymen ...
27
votes
5answers
2k views

Does artificial meat grown in a petri dish have the halachic status of meat?

Scientists are developing means of growing artificial meat in a petri dish. Does such 'meat' have the halachic status of meat? Source: http://www.reuters.com/article/2011/11/11/us-science-meat-f-...
5
votes
2answers
3k views

how old is Judaism?

How old is Judaism - not legendary, but indicated by science? What are the oldest scriptures found of the story of Moses, for example? Or are the scriptures imported from very different cultures so ...
14
votes
11answers
929 views

Reconciling the evidence for the Uncertainty Principle with belief in an omniscient G-d

One of the foundations of modern quantum mechanics is the Uncertainty Principle. This principle is not an assumption, but rather is derived from assumptions made with regard to the structure of nature....
9
votes
6answers
485 views

How does salt “add heat” (mishna in Shabbos 4(1))

The mishna in Shabbos 4(1) tells us which materials may not be used to insulate foods for Shabbos because they "add heat". One of these materials is salt. Can anyone explain how salt can add heat ...
25
votes
8answers
3k views

Time Travel and Judaism

Has time travel ever been discussed before in terms of Judaism? According to Judaism would (should) it be possible to travel through time?
10
votes
1answer
257 views

What is the “Kos Shel Ikrin,” a potion that renders one infertile?

The Talmud discusses the "Kos Shel Ikrin" (Cup of the Barren, or Cup of Roots), a potion that rendered a woman or man infertile. The recipe for this potion is on record in tractate Shabbos and there ...
18
votes
7answers
604 views

why half-believe the Torah?

(I'm not sure this is on-topic, and feel free to close it if it's not, of course.) I understand some who study the Bible claim natural reasons for things we recognize as miracles, from the plagues of ...
5
votes
1answer
273 views

Science of the Rishonim on “celestial spheres”

In the writings of the Rishonim, it is not uncommon to see explanations of pesukim or of aggadic concepts using the "celestial spheres" model of the universe. The Rambam in particular uses the idea ...
12
votes
9answers
1k views

Rationalist Position on Bible Ancients' Long Lives

How would a rationalist interpret the long lives of the ancient people enumerated in the Bible, from Methuselah on down? Virtually no person lives more than 120 years today, even with the assistance ...
17
votes
5answers
532 views

Let there be light! But from where?

According to Genesis 1:3, "And G-d said, Let there be light; and there was light." What light is the Torah referring to if the sun which produces light by day was created only on the 4th day of ...
49
votes
5answers
3k views

Are sea sponges kosher?

The sea sponge is scientifically classified as an animal (kingdom Animalia), therefore maybe it would be considered unkosher, as seafood. On the other hand, its phylum Porifera is distinct and ...
10
votes
3answers
347 views

How do scientists such as Natan Aviezer and Gerald Schroeder understand the fourth day of creation?

If I understand correctly, scientists such as Natan Aviezer and Gerald Schroeder have readings of Genesis Chapter 1 that fit with the current scientific understanding of how the universe/planet/life ...
29
votes
9answers
2k views

Why the vast difference of opinion about the age of the Universe?

5770 and 13,000,000,000 is a big difference! I am looking for a good explanation for the different views of the age of the universe, [the Tanakh's view and astronomy's view.] Please help me out!
23
votes
5answers
2k views

Why do Jews physically resemble members of their “host” nationalities? [closed]

Why do Jews often so closely resemble the members of the nationalities amongst whom they have been living for only a few hundred years? How do features spread through such an exclusive population so ...
35
votes
13answers
3k views

Bereishit vs. science

How does Judaism deal with the differences between scientific evidence of the beginning of the world and the account(s) in Bereishit?

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