The tag has no wiki summary.

learn more… | top users | synonyms

0
votes
2answers
65 views

Why is the big bang considered a proof for Jewish tradition

From the little I understand of the big bang It states that the universe was in a very high density state and then expanded. This is commonly used as a proof that the world had a beginning and thus ...
3
votes
1answer
53 views

How did the water climb so high?

The Gemara in Sota 34 says וכיון שניטבלו רגלי כהנים במים חזרו המים לאחוריהם שנאמר וכבוא נושאי הארון עד הירדן וגו' ויעמדו המים היורדים מלמעלה קמו נד אחד וכמה גובהן של מים שנים עשר מיל על שנים עשר ...
0
votes
1answer
51 views

Vegan tekheileth

Does the oral tradition that identifies the hilazon as the source of tekheles necessarily indicate that one could not create the indigo-colored wool by other means? The gemara certainly indicates that ...
5
votes
1answer
56 views

Is there any support for the claim that tekhelet and argaman could be derived from the same creature?

Is there any indication in Chazal (or at least in other ancient literature) that tekhelet and argaman could be derived from the same creature (as currently proposed by the Tekhelet Institute)?
1
vote
1answer
81 views

The luxury of murex trunculus indigo

The Tekhelet Institute acknowledges that murex trunculus indigo is molecularly equivalent to plant-based indigo that was available in the ancient world for far cheaper (kala ilan). They reason that ...
2
votes
1answer
35 views

Is chimutz a wholly physical phenomenon?

The gemara seems to imply that chametz is not a concern with flour mixed with fruit juice. Indeed, amongst other effects, sugars (which are present in fruit juice) slow gluten development. However, ...
0
votes
2answers
75 views

is one an apikores for believing only in Darwin's evolution as a possibility? [duplicate]

Given that the torah's account of creation clearly seems to state that man was created independently from the animals, and likewise, the animals, plants, were created from the ground, would someone ...
-1
votes
1answer
78 views

What's the earliest “acknowledgement” of Heliocentrism in Judaism? [closed]

The English Wikipedia says that Heliocentrism was "official" in Judaism only by the 20th century: In later periods there were no explicit attacks on heliocentrism, although some Rabbis were not ...
2
votes
1answer
88 views

In vitro meat — further questions

Related to this question: Does artificial meat grown in a petri dish have the halachic status of meat? Assuming that in vitro meat becomes widespread and assuming that it would be hechshered per the ...
6
votes
0answers
113 views

Dilemma for Jewish Scientists

A member of my shul, scientist who was on the short-list to win a Nobel a couple of years ago, made an interesting point about his own ethical issue. As a scientist involved in biology, ...
0
votes
1answer
96 views

Can a person (or cat) be both alive and dead at the same time? (Schrödinger's paradox)

Related: Schrödinger's cat and yibbum That question assumes that Schrödinger's paradox is possible, and that someone can be both dead and alive at the same time. So, is that actually true ...
0
votes
0answers
24 views

Why did God make such a vast, expansive universe? [duplicate]

The title pretty much says it all — but it certainly seems unnecessary and plays very well into the theories of people such as Richard Dawkins. How are we best to respond to this challenge of theirs?
6
votes
1answer
58 views

Medicinal etc. Sections of Talmud

Every now and then, then Gemara will go off on a tangent and discuss medical practices (such as towards the end of Gittin and scattered throughout maseches shabbos) or practical safety advice ...
4
votes
4answers
200 views

Lubavitch and Geocentricism

I read here in an article by Rabbi Gil Student that the late Lubavitcher Rebbe zy"a believed in the geocentric model despite the modern scientific evidence to the contrary. What is the source for this ...
1
vote
2answers
70 views

Torah and Non-Believers, a/k/a, Scientists and Atheists

Is there evidence in the Torah of people who did not believe in Hashem or any other god(s)? I am specifically inquiring of those who believed in what today would be called science or ...
-2
votes
1answer
68 views

Can we give importance to a person's contributions to one field and ignore those to another? [closed]

If an individual, such as a sage or commentator, does or supports something that's completely inaccurate in one field of study of which he claims to have knowledge, does it make sense to give much ...
0
votes
1answer
45 views

Genetically Breeding a Parah Aduma [duplicate]

Can genetic breeding make cows red? If so would it be acceptable as a Parah Aduma?
3
votes
2answers
96 views

Biologically, what are sirchos?

Biologically, what are Sirchos? Are they a Tumor?
6
votes
3answers
133 views

Age of Universe and Shabbat

If one believes that our world is billions of years old, i.e. accepting the idea of each day in Sheshis Imei Berieshit (the Six Days of Creation) as eras and not literal days, then how does one ...
5
votes
2answers
182 views

How to determine what a “normal wind” would do to a sukka

What a "normal wind" ("ruach metzuya") would do affects various laws of sukka construction. For example, in this guide from the Star-K to using sechach mats, they require that sechach-eligible ...
5
votes
0answers
87 views

Does the Torah ever allude to Earth being a spherical celestial body in space?

Taken at face value, the instances in which the Heavens and Earth are mentioned in the Torah, it is the Heavens above and Earth below. From what I gather, many secular scholars take from this that the ...
-8
votes
3answers
192 views

If water can be turned into blood, do Jews believe in modern science?

Exodus 7:20 states that in a few seconds the water in the Nile was turned into blood. Modern science says that this is almost impossible based on how it was described in the torah. No chemicals were ...
6
votes
0answers
119 views

Can dew really make an eggshell fly?

In פרשת בשלח 16:14, it says -- The layer of dew went up, and behold, on the surface of the desert, a fine, bare [substance] as fine as frost on the ground. On that verse, Rashi says ...
3
votes
0answers
56 views

How does meshane hateva work?

When I asked my teacher about why some physical descriptions in the bible or medical practices in the talmud seem impossible/wrong today he told me that the physical nature of the world changed, which ...
3
votes
2answers
161 views

Schrödinger's cat and yibbum

Over Shabbos, the Shalosh Seudos discussion turned to the Monty Hall problem, which confused a lot of people [and which (#Humblebrag) I was able to clear up for them in under 30 seconds ;)]. Then, ...
2
votes
0answers
45 views

Why do we have an appendix according to Torah sources?

Is there any significance in Torah literature, attributed to the appendix and its function in the body?
4
votes
2answers
131 views

Shabbat with time dilation in space

I know there is some discussion in space/planets.. How would you keep shabbos in space? The Rabbi I asked this shabbat pretty much said the same thing; and you go by Jerusalem time when in doubt. ...
0
votes
0answers
90 views

Are Chazal more reliable than other Contemporary Sources (or Modern Historians)?

Are Chazal (and traditional sources) considered preferable or more reliable than external (contemporaneous) or academic sources for non Jewish Tradition issues? For example, this question requests ...
3
votes
1answer
62 views

Who suggests that Creation Ex nihilo was only a small point and light?

If this is a simple minded question, please forgive me, but I'm not Jewish and so most of my information is via naive study and second hand. I've been told by a Jewish friend in my physics class ...
4
votes
3answers
81 views

Why did God say יִקָּווּ הַמַּיִם, it should happen by itself naturally

In Bereishis 1:9 it says וַיֹּאמֶר אֱלֹהִים יִקָּווּ הַמַּיִם מִתַּחַת הַשָּׁמַיִם אֶל מָקוֹם אֶחָד וְתֵרָאֶה הַיַּבָּשָׁה , And God said, "Let the water that is beneath the heavens gather into one ...
-3
votes
2answers
119 views

Would whole brain emulation be compatible with Judaism?

Many people theorize that in principle, the brain could be uploaded to a computer which would then contain the person's consciousness. Would a successful demonstration of this be compatible with ...
7
votes
1answer
128 views

Is the metamorphosis of a caterpillar into a butterfly mentioned anywhere in Rabbinic literature?

My late great grandfather was a torah scholar, but with all his learning, he never knew that a caterpillar metamorphoses into a butterfly. He was amazed when someone told him about the common ...
4
votes
1answer
323 views

Zohar's knowledge about Earth's shape

I recently heard from a rabbi that people (in the Zohar's view) were standing on the Earth's sphere both above and below, and while it was day for some, it was night for others and vice versa. If its ...
12
votes
1answer
1k views

Does a finding of Jewish blood in a DNA test make one Jewish?

I had a DNA test done and the results say that my DNA is group with Sephardic Jews. My last name is Steen and I have always heard that we were of Dutch ancestry and I do genealogy and have not found ...
9
votes
5answers
557 views

Can halacha change based on scientific research?

Shabbat 39a says: "With regard to heating food in the sun itself, everyone agreed that one is permitted to place food in the sun to heat it, as it is certainly neither fire nor a typical form of ...
12
votes
5answers
818 views

How to reconcile Biblical Flood story vs science and history?

Genesis spends a good deal of time -- Chapters 6 through 11 -- discussing the "mabul mayim", a flood that killed all humanity outside the ark. Here is what the Torah's text says about the universality ...
1
vote
0answers
66 views

How do we define the word 'עולם'?

In the standard beracha 'formula' we use the phrase 'מלך העולם'. But what does the word עולם refer to in this context: Earth/world or universe? It may seem obvious that מלך העולם is referring to ...
2
votes
0answers
27 views

What type of mitzvah, if any, is a donation to medical research?

If I give money to a charity that finances medical research, I think I'm doing a mitzvah, but of what sort? Is this tzedakah when I'm not clothing or feeding the poor? Is it saving a life when there ...
5
votes
1answer
105 views

Can you experiment on animals?

May a person perform or otherwise participate in experiments on live animals which will cause the animals pain? I would assume this is forbidden under tzaar baalei chayim. But perhaps there is a heter ...
7
votes
2answers
611 views

In light of modern science, why is bee honey still kosher?

My understanding of why bee honey is kosher is because the talmud says that the honey is not a by-product of the bees. They simply store the nectar in their body to transfer it and then expel it, ...
7
votes
1answer
182 views

Shofar from an extinct animal

After paying a trip to the Natural History Museum in London I found myself wondering... would it be allowed (to any extent) to use a shofar of an animal that has kosher simanim but is extinct? There ...
2
votes
1answer
93 views

Is a Jewish med student allowed to use body parts donated to science?

Would you be required to refuse to work on bodies donated to science for educational purposes?
7
votes
1answer
271 views

Mission to Mars: halachic challenges

There is talk in the scientific community of a manned Mars mission: sending an elderly couple to slingshot past Mars and return to Earth as a trial mission, toward eventual other missions that will ...
6
votes
1answer
99 views

Cultured Beef and the 7 Laws of Noah

I know there have been questions on whether lab meat would be Kosher or not, halavi or besari... I see another potential debate. According to http://culturedbeef.net/what-is-it/, "Cultured Beef is ...
1
vote
0answers
45 views

What is the kashrut status of synthetic/in vitro meat? [duplicate]

It was reported in the news today (at least in the UK) that another step forward has been made towards the creation of "synthetic meat". From BBC News: The world's first lab-grown burger was ...
-2
votes
1answer
119 views

Historical ID lost can it be reclaimed

Could it be possible that many Hispanics who moved from Spain and having their family line coming from Jewish blood (Sephardi Jews), be actually Jews and not know it? There is a test now to check ...
6
votes
2answers
205 views

What does Judaism have to say about the origin of elements?

What does Judaism have to say about the origin of the elements? I mean chemical elements like hydrogen, oxygen, gold, sulfur, etc. Is this discussed at all?
8
votes
1answer
305 views

Is it heresy to read the Bible literally?

Rabbi Jonathan Sacks in this debate with Richard Dawkins says: Rabbis in the 10th century laid down the following principle: If a biblical narrative is incompatible with established scientific ...
4
votes
2answers
226 views

Stars are living creatures?

the Rambam in yesodei torah says that stars are creatures with intellect. how do we reconcile this with modern science which says that they are merely inanimate balls of hydrogen and helium gas.
7
votes
3answers
162 views

Animals sixth sense

It seems that there is evidence that animals possess a sixth sense, such as in their fleeing from the area struck by the huge tsunami of 2005 well before the earthquake which triggered it occurred. Is ...