Questions tagged [science]

questions about science in relation to Judaism

Filter by
Sorted by
Tagged with
1
vote
3answers
133 views

Biblical description of the firmament vs. round earth in the Zohar

Zohar Vaikra 10a [quotes the Book or Rabbi Hamnunab Sabah]: וּבְסִפְרָא דְּרַב הַמְנוּנָא סָבָא, פָּרִישׁ יַתִּיר, דְּהָא כָּל יִשׁוּבָא מִתְגַּלְגְּלָא בְּעִגוּלָא כַּכַּדּוּר, אִלֵּין לְתַתָּא, ...
6
votes
2answers
248 views

What is the Sod HaIbbur and what is so secret about it?

What is the Sod HaIbbur (secret of impregnation)? I have seen it discussed in many places including the Pirkeu D'Rebbi Eliezer (8th chapter?) in reference to the intercalation for the lunar months of ...
-2
votes
2answers
132 views

Why did G-d create the Earth spherical?

I hope nobody questions the fact of the spherical Earth. Just as spherical as all other celestial bodies. Many argued whether we knew this fact or not, but I don't recall that those who claim we ...
-2
votes
1answer
82 views

Arguments against evolution [on hold]

In trying to find the best, most factually based argument against evolution, I found this which said that it just doesn't make sense because why would a creator take so long. Are there any other ...
1
vote
0answers
47 views

Why the fact that the Earth is spherical is a deep secret according to Zohar?

Following "zohars-knowledge-about-earths-shape" and related to my other question "why-did-G-d-create-the-earth-spherical": Zohar (Vayikra 10a) states the following, seemingly pointing to the fact ...
6
votes
1answer
480 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 ...
4
votes
1answer
90 views

Source that אמונת חכמים applies to the Sages' knowledge besides Halachah

Tons of Jewish responsa (incl. this site) is based on a common belief/premise that the Talmudic Sages knew what they say and that everything they said is true - אמונת חכמים (see this question on this ...
-4
votes
1answer
113 views

Why did G-d create everything important off-center?

I hope not to argue that the Heliocentric view is true as is our current understanding of [our position in] the Universe, the Earth is rotating around the Sun, that is rotating around the center of ...
2
votes
1answer
112 views

The science behind making liver kosher

It seems that salting and soaking liver is insufficient to release the blood sufficiently to make it kosher. It needs to be broiled (or is there some other method that also works?) What's the science ...
2
votes
3answers
1k views

The four elements - fire, wind, water and earth

How do we reconcile the torah view of four foundations fire, wind, water, and earth with modern science which demonstrates wind, water, and earth are really not much different. for example, water can ...
0
votes
0answers
28 views

Does Earth geography resemble anything metaphorical?

All I know about the traditional geographical metaphorism is that Jerusalem is the center of the world and the whole inhabitable space is divided between the 70 nations (besides the plain facts, like ...
2
votes
2answers
289 views

Is Studying String Theory Permitted According To The Rambam?

Would the Rambam be fine with String Theory, being that String Theory involves what happened before the world was created (the big bang) and beyond our universe?
2
votes
2answers
199 views

What did G-d do before Creation?

Is it possible to know what G-d was doing before this creation? While, as Maimonides states, that we cannot know anything about G-d except for what G-d is not (G-d has no body and is one), ...
-5
votes
3answers
84 views

Why don't Rabbis endorse technological progress?

I started off thinking about technological advancements that Judaism handed to humanity throughout millennia. I couldn't find one many. Sorry for formulating it as a fact, but I feel it is ...
6
votes
1answer
114 views

Gender and “Seeding” - Just Torah-Derived or Common Belief?

Niddah 31a writes (Davidson Edition translation): אמר רבי יצחק אמר רבי אמי אשה מזרעת תחילה יולדת זכר איש מזריע תחילה יולדת נקבה שנאמר (ויקרא יב, ב) אשה כי תזריע וילדה זכר Rabbi Yitzḥak says ...
1
vote
2answers
113 views

“As many as the stars in the sky”- literally or allegorically?

In Bereishis 15:5 HaShem promises Avraham that his descendants will be as many as the stars in the sky: וַיּוֹצֵ֨א אֹת֜וֹ הַח֗וּצָה וַיֹּ֙אמֶר֙ הַבֶּט־נָ֣א הַשָּׁמַ֗יְמָה וּסְפֹר֙ הַכּ֣וֹכָבִ֔ים ...
9
votes
1answer
858 views

What is meant by the 974 “worlds” that were “created and destroyed”?

Midrash Tehillim 90:13 says that God created and destroyed 974 worlds before this one. What exactly does that mean? I've heard it used in defense of a modern understanding of evolution and cosmology ...
1
vote
3answers
113 views

Books on science and Torah in Hebrew

Can anyone recommend books in Hebrew that address the topic of science and Torah? The types of books that I'm looking for are ones that address the interplay between science and Torah including topics ...
14
votes
5answers
3k 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, ...
1
vote
2answers
105 views

What observable phenomena show that we live in the pre-Messianic era?

There's no doubt that we live in a very special era of fast and huge technological, social, scientific, economic, psychological and other changes. The world is also getting closer to the 6000 year bar,...
0
votes
2answers
101 views

Acquiring Torah without Subvocalization

The Mishnah in Avos (6.6) tells of difference ways to acquire Torah. Here is Rashi’s commentary on one of the items, translated by Sefaria.org. בַּעֲרִיכַת שְׂפָתַיִם. שֶׁאֵינוֹ מְגַמְגֵּם ...
47
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 ...
3
votes
2answers
177 views

Sources for the Earth rotating round the sun

Are there any Jewish writings that suggest the Earth rotates around the sun and is not the center of the universe?
0
votes
1answer
43 views

Has there been any scientific study that agrees with Talmud Rosh Hashanna 20b's time difference?

I'm extracting from this M.Y. question: In Talmud Bavli Rosh Hashanna 20b, R' Zeira quotes R' Nachman as saying: כ"ד שעי מכסי סיהרא לדידן שית מעתיקא ותמני סרי מחדתא לדידהו שית מחדתא ותמני ...
-9
votes
1answer
83 views

Where did Moses' applied scientific knowledge disappear?

I had a series of seemingly true statements that lead me to a contradiction I'm unable to solve: Moses knew all the Torah => Moses knew all the Halacha. Moses knew all the Halochos of Shabbos => when ...
-6
votes
1answer
87 views

How G-d can be distinguished from AI?

One day, after the Moshiach comes, the Earth will be filled with "knowledge of G-d". On the other hand, technologically, one day the Earth will be filled with "knowledge of AI". I'm trying to prepare ...
2
votes
0answers
41 views

Relation between brain damage and the soul

Physical damage to the brain can lead to various psychological and cognitive phenomena, like drastic changes in character, selective memory loss (like forgetting faces but remembering names or vice ...
1
vote
1answer
44 views

How precise were the Temples' directions (East/North)

Calculating the true astronomical North/South is very simple - find the longest way and cast a shadow. Are there sources on how precise those directions in the Temples were? Are there special Jewish ...
0
votes
2answers
120 views

When is it a mitzvah to study science?

I remember hearing from Rabbi Yosef Mizrachi that HaShem created two Torahs, one the Oral and Written and the other the natural world. My question is, when is it a positive mitzvah to study science ...
16
votes
2answers
473 views

Who is worthy of reciting the blessing “שנתן מחכמתו לבשר ודם” on?

On whom does one recite the blessing "שנתן מחכמתו לבשר ודם" (the blessing recited on non-Jewish scientists)? Does he have to be a Ph.D? Does he have to have inventions to his name? Did he have to ...
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!
-4
votes
2answers
195 views

Rabbinical sources that support the Flat Earth view

While many people are busy looking for the slightest hints of the vast scientific knowledge possessed by our Sages, I've bumped into Rasa"G's interpretation of Sefer Hayetzirah 4,2 (c.900) (is there ...
5
votes
0answers
49 views

Is mustard harmful to bees or the honey making process?

The Mishna in Bava Basra (2:10) says: (all translations from Sefaria) מַרְחִיקִין אֶת הַמִּשְׁרָה מִן הַיָּרָק, וְאֶת הַכְּרֵשִׁין מִן הַבְּצָלִים, וְאֶת הַחַרְדָּל מִן הַדְּבוֹרִים. רַבִּי יוֹסֵי ...
2
votes
0answers
177 views

Is the base for bloodletting in the Talmud purely “scientific” or traditional?

Bloodletting (הקזת דם) was a commonplace medical procedure in the Mishnaic times (see Shabbos 129). It is widely accepted that the ancient healers believed that: "... many diseases were caused by ...
1
vote
1answer
58 views

Measuring the universe in G-d's cubits (Eruvin 21a)

In the following passage (Eruvin 21a in William Davidson edition) the sages try to determine the size of the Torah scroll that Zachariah saw in his prophecy: In order to determine the measure of ...
3
votes
0answers
93 views

How do the outer planets: Uranus, Neptune and Pluto fit into Judaism?

It is not a secret that we discover new things in all fields of science, not mentioned in our sources all the time. We know that in Judaism the 7 planets represent/aligned with 7 spiritual forces ...
1
vote
0answers
47 views

Does Judaism differentiate between a planet and a star?

On the 4th day, G-d created Sun, Moon and the stars. Besides the Moon, Mercury, Venus, Mars, Jupiter, and Saturn were known since ancient times (not mentioning the existence of the real stars). ...
36
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?
0
votes
1answer
106 views

Age of Universe [duplicate]

What is the most plausible way to reconcile the traditional dating of the universe (now 5779) with science's understanding that the universe is billions of years old?
10
votes
3answers
313 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 ...
7
votes
1answer
1k views

Why are Oats Chametz if oats cannot rise

Oats do not have gluten so they cannot rise - like rice and other such grains. I could understand why they would be kitniot but why are they chametz? I know in arvei psachim there is an opinion that ...
3
votes
2answers
97 views

Building a Mikva Upstairs

Every Mikva I am personally familiar with is on the ground floor (first floor) or basement of its building. Let's say a congregation owns a one story building they use as their shul. They agree to ...
1
vote
0answers
55 views

Mathematical functions in Jewish Halacha [closed]

What mathematical operators, functions, and constants are mentioned in the Halachah besides addition, subtraction, multiplication, and division? For example: powers and square or other roots, Pi etc....
0
votes
1answer
72 views

Gr"A stating that Africa is [at] the South Pole

(Saw it today at the Kolel in Mikraot Gedolot, sorry can't find it online, please help). At the beginning of Divrei Hayamim, Pirush HaGr"a explains various nations coming out of Noah's sons and how ...
3
votes
5answers
280 views

How is “magic” defined for the purposes of the prohibition against kishuf?

As Arthur C. Clarke famously said, "Any sufficiently advanced technology is indistinguishable from magic." The idea here actually generalizes much further. Today's technology would have been ...
10
votes
6answers
611 views

Is there any reason to deny aliens according to Judaism?

Is there any reason that we couldn't believe in life on another planet somewhere? Is there any source that indicates to the contrary?
5
votes
0answers
44 views

Is there a scientific basis for the claim that the 3rd day from the circumcision is the most painful and dangerous? [duplicate]

Is there a scientific basis for the claim that the third day from the day of a circumcision is the most painful and dangerous? In Mishana (shabbath 19,3) מרחיצין את הקטן בין לפני המילה ובין לאחר ...
6
votes
10answers
626 views

The Plague of Darkness

This is a two fold question 1)The plaque of darkness has considerable commentary, however I have yet to find a rabbi who speaks about what created the darkness. Therefore, What created the darkness ...
23
votes
8answers
2k 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?
5
votes
1answer
185 views

Becoming Chametz at 18 mins

According to the Talmud Pesachim 46a, a non-leavened dough should show signs of Chimutz within a shiur of walking a Mil (or 4 Mil according to the Yerushalmi), which is 18 to 24 minutes. Similarly if ...