Tagged Questions
6
votes
1answer
75 views
Is it permitted to use a thermochromic cup on Shabbos?
A novelty cup, see for example here, appears black when cold. When hot liquid is poured into it, the black changes to white and the previously concealed writing (underneath, so to speak) becomes ...
2
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1answer
96 views
9
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1answer
108 views
Tzoveah on Shabbos
It is going to sound strange but here is the question In the toilet there are these blue things that clean your bathroom with every flush by adding bleach hence it colors the water blue every time you ...
