What is happening when a computer generates a random number? Are all RNG programs created equally? What makes an RNG better or worse? | AskScience Blog

Pages

Monday, October 23, 2017

What is happening when a computer generates a random number? Are all RNG programs created equally? What makes an RNG better or worse?

What is happening when a computer generates a random number? Are all RNG programs created equally? What makes an RNG better or worse?


What is happening when a computer generates a random number? Are all RNG programs created equally? What makes an RNG better or worse?

Posted: 22 Oct 2017 11:09 AM PDT

What are the hair follicles doing differently in humans with different hair types (straight vs wavy vs curly vs frizzy etc., and also color differences) at the point where the hair gets "assembled" by the follicle?

Posted: 23 Oct 2017 07:00 AM PDT

If hair is just a structure that gets "extruded" by a hair follicle, then all differences in human hair (at least when it exits the follicle) must be due to mechanical and chemical differences built-in to the hair shaft itself when it gets assembled, right?

 

So what are these differences, and what are their "biomechanical" origins? In other words, what exactly are hair follicles, how do they take molecules and turn them into "hair", and how does this process differ from hair type to hair type.

 

Sorry if some of that was redundant, but I was trying to ask the same question multiple ways for clarity, since I wasn't sure I was using the correct terms in either case.

 

Edit 1: I tagged this with the "Biology" flair because I thought it might be an appropriate question for a molecular biologist or similar, but if it would be more appropriately set to the "Human Body" flair, let me know.

Edit 2: Clarified "Edit 1" wording.

submitted by /u/Mars2035
[link] [comments]

What is happening when a chip goes stale?

Posted: 22 Oct 2017 09:28 AM PDT

What "physically" is the wave described in Pilot-wave Theory/Bohmiam mechanics?

Posted: 23 Oct 2017 04:38 AM PDT

In Pilot-wave Theory (de Broglie–Bohm theory), what is the wave that the particle is interacting with? Is it like a quantum field theory wave, one for every particle or type of particle in the universe? Some sort of interaction with space-time? Or some sort of emergent property of the particle itself - in which case how does that differ from wave-particle duality?

submitted by /u/danielchorley
[link] [comments]

How do the salt balls form in the Dead Sea?

Posted: 22 Oct 2017 08:28 PM PDT

My parents brought some salt balls back from the Dead Sea and my dad and I got into a discussion about how they form. After a bit of hypothesizing we turned to the trusty internet to see who is correct but we both have come up empty. Can Reddit settle it? How do they form?

submitted by /u/Fireprf
[link] [comments]

Do babies in the womb dream?

Posted: 22 Oct 2017 07:07 PM PDT

I mean of course it would have to be at a more advanced stage where the brain is developed to a point but considering pre-born babies do not have any perspective on ... well anything, do they dream?

submitted by /u/LebronKingJames
[link] [comments]

What happens to concrete on a molecular level when it cures?

Posted: 22 Oct 2017 05:20 PM PDT

I know it does not just dry out the water, otherwise buildings would melt when it rains. What exactly happens? Thanks.

submitted by /u/sebasvel
[link] [comments]

Stepping down AC voltage and converting to DC comes with losses. LED light bulbs get pretty hot. Are they really saving energy?

Posted: 22 Oct 2017 08:23 PM PDT

Is there any reason to wash your clothes in separate loads/“with like colors”?

Posted: 22 Oct 2017 07:15 PM PDT

Often you'll see clothing tags advise consumers to wash "with like colors," and my own mother has a "light" load, "dark load," "jean," "dressy," "red" (if it's big enough), and "intimates/sheets/towels/gym clothes" (stuff with a lot of contact with the smellier parts of you). However, my fiancée just throws in as much as the washer can hold. Have I been over-complicating clothes washing all my life?

(Fiancée is a man, uses the extra e because I proposed to him, we know it's Frenchmatically wrong)

submitted by /u/SlippingStar
[link] [comments]

How come light has momentum when it travels at the speed of light(c)?

Posted: 23 Oct 2017 05:33 AM PDT

Using the relativistic momentum equation we see the result is zero momentum p=mv/√(1-v2 / c2 ). v=c so the result would be mv/0, undefined.

submitted by /u/samdude17
[link] [comments]

Is the human genome adapting to our modern diet?

Posted: 22 Oct 2017 02:23 PM PDT

It's quite clear that modern humans in industrialized countries eat a far different diet than the hunters and foragers of antiquity. I would guess that natural selection pressures (such as deaths due to heart disease or diabetes) and sexual selection pressures (such as an aversity towards obesity) have had some effect on the modern human genome. Has there been a measurable effect on allele frequency?

submitted by /u/TristanBomb
[link] [comments]

How exactly does Earth's magnetic field protect us from solar flares?

Posted: 22 Oct 2017 06:49 PM PDT

If staring at the sun will damage our eyesight, why aren't our peripherals damaged severely from all the time the sun spends there?

Posted: 22 Oct 2017 02:44 PM PDT

Given the increase in mobile data speed from 2G to 3G to 4G, is there a theoretical limit? If so, are we close? Or just getting started?

Posted: 22 Oct 2017 03:21 PM PDT

Do more devices result in thinner slices of pie?

submitted by /u/lessnonymous
[link] [comments]

Why do European bottles say "Fill level due to technical reasons" but in Asia they are filled to the top?

Posted: 22 Oct 2017 01:07 PM PDT

Assuming they use the same machines to bottle, there don't seem to be any technical issues preventing them from filling it up to the top.

submitted by /u/k_thien
[link] [comments]

In what language were programming languages written?

Posted: 22 Oct 2017 03:27 PM PDT

What causes quantum fluctuations?

Posted: 22 Oct 2017 02:39 PM PDT

If virtual particles are caused by fluctuations in quantum fields, then what causes those fluctuations?

submitted by /u/JosephTheMlem
[link] [comments]

Orbital slingshot? (what is it and how does it work?)

Posted: 22 Oct 2017 07:23 PM PDT

So I'm having a bit of a mind blank moment, but I need some help with being explained how and what orbital slingshots are. I would've asked r/ExplainLikeImFive, but I feel like it would be more appropriate here. Giving an easy to understand answer would be appreciated though !!

thankyou :)

submitted by /u/Rachaelvl500
[link] [comments]

How is Mills's constant calculated? How does it relate to the Riemann hypothesis? Why don't we know if it's rational?

Posted: 22 Oct 2017 11:37 AM PDT

Is fire affected by momentum?

Posted: 22 Oct 2017 10:15 AM PDT

Say if you were to drop a fire 50 ft on to the ground in a box where no wind would put the fire out. Would the fire hit the ground and then compress due to momentum? Or would it keep burning normally (upright flames)

submitted by /u/SheanGomes
[link] [comments]

No comments:

Post a Comment