Tagged Questions
6
votes
0answers
57 views
Would a genetically engineered red heifer be usable?
Assuming that a non-Jew chose to create a genetically engineered parah adumah (red heifer) and further assuming it met all the halachic requirements --no two black hairs, hadn't been used for work ...
3
votes
0answers
96 views
Would time travel be assur/mutar?
Inspired by this question which the author states is not a question of issur/heter. Assuming time travel is possible (to the future or past) is there any reason it should be assur?
4
votes
3answers
151 views
May we genetically engineer stuff?
The possibilities of genetic engineering continue to grow. May a Jewish scientist genetically engineer things?
6
votes
1answer
87 views
What is “blood that moved from one place to another”?
I'm learning laws of salting in the Shulchan Aruch. One concept I'm battling to understand is "דם שפירש ממקום למקום" - blood that moved from one place to another. Here's a good example of my ...
9
votes
3answers
346 views
Time dilation and waiting between meat and milk
Suppose Ploni eats some meat. He then gets in a spaceship and accelerates to some significant percentage of the speed of light for a short trip into outer space, and then returns home. At the time ...
2
votes
2answers
155 views
Synthetic unkosher meat?
Suppose tissue identical to that of a pig could be created synthetically (with kosher ingredients) in a science lab. The meat would be completely indistinguishable from pig meat, but it would never ...
7
votes
2answers
122 views
Cryonics in Judaism
I was recently reading an article about cryogenics, there are around 200 bodies frozen in cryogenics labs around the world, and in the article they said that in the near future they may be able to ...
12
votes
1answer
172 views
Who knows science?
On whom does one recite the blessing "ברכת 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 ...
4
votes
0answers
128 views
Would synthesized meat be Kosher?
Scientists are preparing synthesized meat for human consumption. See here for a excerpt, and two articles here and here.
My question is: Would this meat be considered Kosher? Might it depend on the ...
9
votes
2answers
215 views
Kosherizing Water using Distillation
Suppose I have water that was cooked with non-kosher food. I then take the water and distill it.
Would this water be considered permissible to drink?
4
votes
1answer
113 views
How is Hagalah done on glass?
With regards to using glass vessels on Pesach that were used year round, The Shulchan Aruch HaRav (Orach Chaim 451:63) says that, for Ashkenazim, if the glass vessel was used multiple times during the ...
6
votes
2answers
164 views
Is olive oil unhealthy?
The Gemara in Brachot 35b says that the proper bracha on pure olive oil is "Borei Peri HaEtz". However, it says that this refers to when you mixed the oil with some אניגרון which Prof Marcus Jastrow ...
15
votes
2answers
265 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: ...
7
votes
4answers
284 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 ...
