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Is a black hole a virtual object?

Submitted by peacefultoker420 t3_10eq3n3 on January 17, 2023 at 10:45 PM

12 comments

I have just been told that A, tests markers for blood tests and health checks etc (I dunno… testosterone, cholesterol, red blood cells) in the population are changing over time, and that B, the acceptable levels for such markers are changing with them. Is this true?

Submitted by rsbanham t3_10eo8kg on January 17, 2023 at 9:33 PM

9 comments

would exposing an individual to infection on a regular basis make their immune system stronger than normal?

Submitted by wakatenai t3_10eleq0 on January 17, 2023 at 7:44 PM

10 comments

What happens to the energy of sound in space?

Submitted by full_hammer t3_10eku2h on January 17, 2023 at 7:22 PM

171 comments

669

It seems like the effective dosage of most medications tend to be in the 5mg to 200mg range (although there are some medications with smaller or larger dosages). Is this an accurate observation? If so, why?

Submitted by Fbg2525 t3_10ek9vz on January 17, 2023 at 7:00 PM

6 comments

Biologically speaking, what makes men typically stronger than women?

Submitted by Erratic_Noman t3_10ejkgo on January 17, 2023 at 6:32 PM

61 comments

What exactly happens in your body when you touch or consume a radioactive substance i.e U235 or Pu239. What happens on the cellular level and how the brain & nervous system deals with it?

Submitted by Baby-saint t3_10ejit7 on January 17, 2023 at 6:30 PM

10 comments

What does the ricin molecule do in the castor bean?

Submitted by GalFisk t3_10ejfsw on January 17, 2023 at 6:27 PM

9 comments

What determines the lifespan of a species? Why do humans have such a long lifespan compared to say a housecat?

Submitted by Forking_Shorts92 t3_10efpe1 on January 17, 2023 at 3:58 PM

9 comments

My 4y/o told me her dream about losing teeth without ever knowing it's a common dream. Are there any other examples of cross-cultural phenomena that centers on a specific narrative?

Submitted by koleslaw t3_10efiem on January 17, 2023 at 3:50 PM

7 comments

Do teeth already have ridges before erupting? How do teeth fit in so nicely after erupting?

Submitted by Lancerinmud t3_10ecpdo on January 17, 2023 at 1:48 PM

8 comments

What makes a fiber or fabric absorbent, wicking, breathable, or cooling?

Submitted by DisenchantedAuD t3_10eazbr on January 17, 2023 at 12:23 PM

13 comments

Why does the existence of magnetic monopoles imply quantized electric charges?

Submitted by Speterius t3_10ea1ng on January 17, 2023 at 11:30 AM

13 comments

If nuclear fission in U-235 causes the atom to be split into 2 smaller atoms (such as Kr-92 and Ba-141) then how is it that U-236 is produced as waste since the U-235 was just split into smaller peices?

Submitted by Ian98766 t3_10e7vgv on January 17, 2023 at 9:17 AM

165 comments

3,142

Does anybody have any good examples or uses of negative derivatives of displacement, such as absement, absity, and so on? Though it is easy to calculate, it’s hard to find use for it.

Submitted by LunarSolar1234 t3_10e7j8v on January 17, 2023 at 8:57 AM

10 comments

How do non electric heat operated fans work?

Submitted by ranman12953 t3_10dg022 on January 16, 2023 at 2:32 PM

142 comments

739

Why are skeletal muscle fibres bundled?

Submitted by Repulsive_Cry_2200 t3_10d3ikf on January 16, 2023 at 3:14 AM

13 comments

How do we know that we are in a certain place inside our galaxy? and how do we know how big it is just by looking at the cross section we are in?

Submitted by friday_panda t3_10d04va on January 16, 2023 at 12:37 AM

64 comments

1,118

Post exposure rabies shots protection?

Submitted by [deleted] t3_10cyyje on January 15, 2023 at 11:47 PM

47 comments

338

How does my pumpkin plant not get sick when a pumpkin rots on the vine?

Submitted by cream_of_slop t3_10cjkky on January 15, 2023 at 1:13 PM

11 comments

Since almost all European vineyards graft on to American rootstock which is resistant to phylloxera, if one didn't do this, would there still by phylloxera around to constitute a threat anymore?

Submitted by JimmyCrackCrack t3_10ciost on January 15, 2023 at 12:28 PM

9 comments

370

What would happen if we took an organism's DNA, separated each and every couple of DNA that coded for ONE SINGLE PROTEIN and jumbled it up in a different order?

Submitted by heartless-tramp t3_10cfqkv on January 15, 2023 at 9:35 AM

12 comments

How accurately can medicine pinpoint causes of cancer?

Submitted by GuptRX t3_10cdmch on January 15, 2023 at 7:22 AM

7 comments

My 4y/o told me her dream about losing teeth without ever knowing it's a common dream. Are there any other examples of cross-cultural phenomena that centers on a specific narrative?

Submitted by [deleted] t3_10cc5e7 on January 15, 2023 at 5:57 AM

29 comments

How do the new generation of weight loss drugs (Semaglutide, tirzepatide) work and why are they seemingly so effective?

Submitted by harpoonhambone t3_10cbocm on January 15, 2023 at 5:31 AM

21 comments