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Tuesday, March 07, 2023 | commentary

Don't put your milk on the bottom shelf

A silly example about something that's ridiculously easy to check, but the media still get it wrong


T he UK Daily Mail is normally a great source for news. Their strategy is to print the news fast and worry later about whether it's factual, grammatical, or spelled correctly.

Refrigerator temperatures

Actual measured temperatures in a Whirlpool ED5VHEX001 side-by-side refrigerator-freezer

That saves me a lot of time. When there's a story about someone called Melvin Merkle or whatever his name is, I skip over it. When the story is accompanied by an animated image or fake sonogram or the words Trump or climate change, I know it's just another made-up story. If the word Ben Affleck appears, I know I can skip over it without missing anything important. Then there's this Biden fella. Whoever he is, he seems unable to form a coherent sentence and he keeps falling down the stairs. We should consider ourselves lucky that he's not our president, or we'd probably be sleepwalking toward World War III.

Not that I have anything against Ben Affleck or Marvin Murple. But why do they keep insisting that we should put milk on the bottom shelf because it's colder? Honestly, how hard is it for people to actually measure something instead of telling people what to do because they assume it's true?

They did the same with facemasks and vaccines because the “experts” told them it was true. And of course they do it with global warming. But the best place to put milk is easy to check. You don't need to be a scientist.

Well, I measured it. The results are shown in the diagram at right. I'd probably get censored on Facebook or Instagram for saying this, but the bottom of a fridge is not colder for reasons I explained before and can't be bothered to repeat.

The claim that the bottom is always colder sounds plausible, but it is not true and it's easy for anybody, even a news reporter, to check.

Frozen milk

Milk stored in the back of top shelf in a refrigerator was frozen solid after a week while lettuce on lower shelf and Crisper Drawer was unaffected

I took at least two readings with a wireless thermometer at each location after waiting >2 hours for equilibration. Blue = ice maker, green = crisper drawer. The top shelf is always coldest, both in the fridge and freezer. The refrigerator door is always warmer, probably because the insulation is thinner in the door. This makes the outside of the door feel cold to the touch. Notice that the shelves in the door don't line up with the refrigerator. This is no accident: it is done to allow air to circulate. (No doubt it also helps avoid breakage if the shelf is left pulled out). Engineers know about physics and design their refrigerators accordingly. Who knew?

The top of the refrigerator is coldest because the fridge part gets its cold air through a hole between the freezer and refrigerator. This is true in every top/bottom and left/right refrigerator-freezer combination I've ever looked at, and it's why the temperature on the top shelf varies so much. When the fridge is running, the top shelf drops down to 27.3°F, then warms back up to 30.0 when it stops. But it is always the coldest. The warmest shelf is the Crisper Drawer and the shelf above it. Even the bottom shelf of the freezer is six degrees warmer than the top shelf.

Think about it. How else would they do it? Put two compressors in? Any company that tried that would go out of business pretty quick.

The point is: If the press can't be bothered to check something this easy to confirm, how can we trust them to report anything accurately at all?


mar 07 2023, 5:53 am. milk gotten jun 18 2023


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