What's the difference in infrastructure needed to provide 3G/4G/5G signals? | AskScience Blog

Pages

Wednesday, November 2, 2016

What's the difference in infrastructure needed to provide 3G/4G/5G signals?

What's the difference in infrastructure needed to provide 3G/4G/5G signals?


What's the difference in infrastructure needed to provide 3G/4G/5G signals?

Posted: 01 Nov 2016 08:48 PM PDT

I was wondering what's the difference between the antennas or cell towers needed to provide 3G/4G/5G. Does it need a totally new antenna? Maybe more cell towers? Does it need just a minor change on each? Or does it need nothing at all in terms of infrastructure?

Thank you!

submitted by /u/juanb95
[link] [comments]

When you spin yourself in an office chair and pull your legs in you spin faster. What is this called? Besides fun.

Posted: 01 Nov 2016 08:33 PM PDT

How can we tell how far a star is?

Posted: 02 Nov 2016 12:17 AM PDT

Hi,I know about redshift, though I can't understand how we can tell how much that light has redshifted if we don't know its original state. In other words, we can observe only the light that travelled that long way to us, and due to doppler effect it has shifted a bit. I read the defition of redshift, and it says it happenens when the frequence of light is lower than when it was emitted. But we don't actually know what its original frequence was, right? I know this may sound a stupid question to you, but I can't realize it by myself.

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

Solutions to the equation a^a = b^b?

Posted: 01 Nov 2016 08:58 PM PDT

After seeing the thread about the possible solutions to ab = ba, I was wondering what will happen if we were to look for the solutions to aa = bb where a =/= b.

One possible solution is when a = 1/2 and b = 1/4. Intuitively, the possible solutions for a and b should be in the interval (0,1) since if a > b > 1, then aa > bb.

By considering the function y = xx, it can be shown that it achieves a global minimum at 1/e and that the graph concaves up for every x in its domain. So, in the interval (0, 1), there ought to be infinite solutions as horizontal straight lines can be drawn to cut the graph of y twice in this interval. (Please do correct me if this reasoning is wrong.)

So, the thing is, is it possible to obtain all possible pairs of (a, b) that are solutions to aa = bb ?

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

[OPTIC] Why does every measurement of a system that contains coupling/transmission is approximated through a lorentzian function?

Posted: 02 Nov 2016 04:22 AM PDT

I often read that something in the field of optic gets measured and then gets least-square fitted by a lorentzian functionl. I think it was always with coupling/transmission etc. hence the question, since I didn't find any source and everything that I found just stated that they did it.

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

Is there a certain amount of "real estate" at the a given Lagrangian point? Could we potentially put too many stations, observatories, or other spacecraft there and run out of room?

Posted: 01 Nov 2016 10:22 AM PDT

Is it possible to use quantum entanglement to exchange encryption keys?

Posted: 01 Nov 2016 08:10 PM PDT

I know that you can't choose the state of entangled particles so you can't send a message with them other than random noise, but that got me thinking--random noise is a good encryption key, right? So if we got say 256 pairs of entangled particles, both parties could know the key they're using for a symmetric encryption scheme without anyone else possibly finding out: it would probably be the most secure key exchange method physically possible. Are there any holes in my logic or would this work? (Of course I know you still couldn't send faster than light messages this way)

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

Why do all the planets orbit in the same direction?

Posted: 02 Nov 2016 06:12 AM PDT

Ribosome inputs and outputs?

Posted: 01 Nov 2016 08:35 AM PDT

In protein synthesis triplets of RNA are being consumed/evaluated at the ribosome to direct amino acids selection I want to know if the process is destructive to the RNA strand or not or both are possible

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

(Chemistry) Why soil is considered as organic as well as inorganic natural resource ??

Posted: 01 Nov 2016 11:21 PM PDT

Which is basically called mixed resources but can't understand why?

submitted by /u/learner892
[link] [comments]

[Physics] Are we absolutely sure that what we know about classical mechanics applies on Mars?

Posted: 01 Nov 2016 07:33 PM PDT

Kind of a random thing I started thinking about today doing my physics homework...

I'm not sure if "classical mechanics" is the right term, but I basically mean the stuff you learn in your calculus based physics sequence (Kinematics/Rotational, Energy, Work, etc). Can you basically just replace the constants we use like g and start solving problems the same way? What about other branches of science?

Thanks!

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

What is Invariant Space-time Interval and what ramifications does it have on our understanding of space-time?

Posted: 01 Nov 2016 08:16 PM PDT

I'm finding it hard to find any sources regarding this topic that I understand. Could anyone please provide a succinct explanation? Thanks.

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

What caused the first cell to split?

Posted: 01 Nov 2016 09:44 PM PDT

Pretty straight forward question... What caused the first cell that developed, to split or "reproduce", for a lack of a better term.

Thank you.

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

Is there a difference between how the human body processes added sugars vs naturally occuring sugars?

Posted: 01 Nov 2016 07:00 AM PDT

If there is a difference, is there a way to tell how those different sugars act on the human body, so basically which are healthy and which aren't and in what dosage? Would you suggest avoiding added sugars?

However, none of the experts who spoke to WebMD advocated that people try to purge all added sugars from their diets. By itself, sugar is not a risky food, says Rae-Ellen W. Kavey, MD, MPH, a pediatrics professor at the University of Rochester School of Medicine and Dentistry. "The focus should be on a healthful approach," she says, "not people rushing to one side or the other."

Article on WebMD

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

I have a coin that I suspect flips heads 50.1% of the time, how many flips do I need to distinguish it from a coin that flips heads 50% of the time?

Posted: 01 Nov 2016 04:00 PM PDT

This is entirely hypothetical. I'm interested in understanding the statistical analysis involved, especially assigning confidence intervals.

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

What is "Nuclear Pasta" ?

Posted: 02 Nov 2016 12:24 AM PDT

Why doesn't gravity work on small scales?

Posted: 01 Nov 2016 01:42 PM PDT

Basically why aren't marbles around my house orbiting my body? Why aren't I "sucked" towards a large building when I walk by? I hope my question makes sense

submitted by /u/ThePioneer99
[link] [comments]

Where do microscopic and macroscopic overlap?

Posted: 01 Nov 2016 02:35 PM PDT

There's clearly a difference between the two, but I was wondering if there's a known scale at which we see quantum effects begin to approximate classical terms

submitted by /u/backflip7
[link] [comments]

What makes Carbon 14 (and other atoms) unstable?

Posted: 01 Nov 2016 04:50 PM PDT

I read that the reason atoms with high mass are unstable is because the strong nuclear force's range is too short to hold the protons and neutrons together. If this is the case then why is Carbon 14 unstable even though I think it's mass is too small for this effect to happen. So what causes it to be unstable?

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

What exactly is a psu efficiency rating and what does it measure?

Posted: 01 Nov 2016 03:37 PM PDT

Is it the loss of power when converting from receptical ac to dc, or is it something else?

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

What is the force acting between gas molecules that keeps them away from each other? (or) Why is air pressure so very homogenous? Why aren't gasses more... sloshy?

Posted: 02 Nov 2016 01:39 AM PDT

I recall from science classes in school that gas molecules are far less dense than solids/liquids, and that they're all flying around very quickly, but what is it about gas molecules that causes them to keep a certain average distance from each-other so effectively? My intuition constantly wants to see them act in the sloshy way that water vapor does, but clearly that is not the case; air pressure seems astonishingly uniform.

I intuitively almost expect to suffocate if there is somehow not enough air in my little corner of the room.

To give another example, if my window is open in my bedroom, my door is much easier to close, because apparently when the window is closed, it is very difficult to increase the air pressure in my room, even momentarily by a very small amount.

Another mind-boggling example is sound waves even being possible: a tiny compression and rarefaction can be faithfully reproduced over great distances at 20kHz. That's amazing.

Why are all the molecules so regularly spaced even as they fly around? If I turn on a speaker, why don't they just scatter willy-nilly? (And, it occurs to me, is that what would happen if I turned on a speaker at the top of earth's atmosphere?)

submitted by /u/jakisan-FF
[link] [comments]

Why does a liquid being poured out of a bottle not flow smoothly?

Posted: 01 Nov 2016 03:03 PM PDT

Can an object collapse in on itself if it's thin enough?

Posted: 01 Nov 2016 11:59 AM PDT

If there were to be, say, a very thin piece of paper floating in an empty universe, would the gravitational force cause it to collapse in on itself, or would it remain still forever?

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

No comments:

Post a Comment