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The opening of this shiur, in Rabbi Yosef Gavriel Bechhofer’s own words — taken from the captions, so names and Hebrew terms may be approximate.
okay so um the the first example of which he gave last week from nature of knowing um being able to receive that there's a Hashem was that the idea that water as it begun as it freezes like all other um um matter on Earth gets more and more dense which means basically heavier except the water at when it gets to four degrees Celsius four degrees above freezing it all of a sudden expands and it gets less dense which means it's lighter so there that's why and even by time reaches freezing it's still less dense than and then water and therefore ice Rises to the top of a cup when you put ice in a cup any other uh substance in the world if you uh put it into a cup of its own liquid the solid would flow through the but would go to the bottom because the slides are heavier than the liquids but uh by water it's not that weight the soil is not having the liquid and uh the reason why this has to be this way is because otherwise every winter the uh ice will form at the bottom of a pond or river or lake and it would kill all the fish because it wouldn't have any place to get the nutrients from and this way every winter the ice forms on the top of a lake or Palmdale River and the fish survive underneath and so people go ice fishing in the middle of a winter so that uh it really there's no real reason that we can identify for this scientifically because if you make if you want to take hydrogen or oxygen the two components of water and freeze them so then the the liquid form be heavy on the gas form and the salt form would be
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