iimplodethings

iimplodethings t1_jefl4e5 wrote

One thing to be aware of is that unless you go to a dedicated gluten-free restaurant, there's a pretty large risk of cross contamination or just outright having wheat in things – one study found that upwards of 1/3 of restaurant meals labeled "gluten free" actually contained wheat.

Ethiopian food is great but often teff flour in the US is mixed with wheat flour, so make sure that isn't the case

Anyways, I second Chaia and also I'd add Seoul Spice to the list.

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iimplodethings t1_jedfy1a wrote

I don't know as far as daylight goes, but in low light conditions a big part of the advantage of optics (even low magnification) is just collecting MORE light. A 5" telescope will gather a lot more photons than a 3" telescope (or a 1/4" eyeball pupil) even if they're the same magnification.

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iimplodethings t1_japxr4o wrote

I'm a physicist; you need a geologist or planetary scientist to really answer this. But from my very limited knowledge of planetary geology:

The minerals present on a planet depend a lot on what's going on inside the planet and how it formed. Planets with volcanic activity (e.g. Mars) will have igneous rocks whereas planets without probably won't; some minerals like olivine can be produced inside a planet but may chemically weather to other minerals depending on the atmosphere if there is any. But you find olivine on many planets and in meteorites, and it's the same mineral as the one you find on earth. Also some minerals need water to form - hydrated minerals found on mars can be indicators of past water in that area. Afaik the temperature (in the weather sense, not talking about volcanoes etc) in a region doesn't have much direct impact on minerals but can have a big impact on soils because it affects what life does, and that's the big uncertainty in your question about other planets. The "dirt" on earth is very different in a rainforest than in a desert largely because the rainforest dirt is full of living things and decaying organic matter, but the desert dirt is mostly mineral sand

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iimplodethings t1_j80hlh8 wrote

For all intents and purposes, no. This is roughly the dose rate of simply being on a plane at cruising altitude. There are plenty of bacteria that can survive living in radiation environments substantially worse than that indefinitely.

For context the standard dose for sterilizing medical devices is ~25 kGray or 2.5 million rad which is very roughly (neglecting for this back of envelope calc the difference between absorbed dose and effective dose) 2.5x10^10 microsieverts. So I mean if you wanted to wait a couple hundred thousand years...

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