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3
votes
1answer
71 views

Limits of A Mechanical Processor [closed]

Is it possible to build an electromechanical processor at high speed and capacity, with the same functionality as of today's modern microprocessors consisting of millions of transistors? I mean, ...
28
votes
4answers
3k views

Why do computers generate heat?

Computers generate heat when they work. Is it a result of information processing or friction (resistance)? Are these just different ways to describe the same thing? Or does some definite part of the ...
1
vote
1answer
49 views

Physics in Video Games [closed]

I am a programmer and I want to pursue the Game Design field. From talking to my teachers about it, they said that physics plays a major role. My Question is: How does physics transfer to a virtual ...
2
votes
0answers
69 views

M-Theory and computer simulation

I have a question. Is it possible to perform computer simulations based on the M-Theory? I was looking for such simulators or source codes but I have not found anything. However, M-theory must have ...
3
votes
2answers
165 views

Lexical/ontological/semantic knowledge base for physics

(1) Are there lexical/semantic knowledge bases for physics that can be used for automated reasoning and AI (like Princeton's Wordnet and MIT's Conceptnet for common sense English usage)? (2) If not ...
2
votes
4answers
301 views

Is our universe an emulation?

I was watching one of Neil Degrasse Tyson talks and there was a scientist (can't recall his name sorry) who was talking about a recent discovery: "Doubly-even self-dual linear binary ...
24
votes
8answers
8k views

Since cables carry electricity moving at the speed of light, why aren't computer networks much faster?

Why can't cables used for computer networking transfer data really fast, say at the speed of light? I ask this because electricity travels at the speed of light. Take Ethernet cables for example, I ...
4
votes
0answers
97 views

Nature as a calculator [closed]

I wondered whether physical experiments can find the outcome of otherwise intractable mathematical problems. For example, solitons or other non-perturbative effects in QFT cannot be seen at any ...
-2
votes
3answers
121 views

How to convert RGB values to physical radiometry and/or photometry quantities and back?

What are RGB values actually mean in physical sense? Are these values mean some amount of light or energy per surface unit or what? Are they logarithmic? Fro example, why do these values are ...
3
votes
1answer
125 views

Does the weight of a computer go up as information is added to it? [duplicate]

This probably sounds really naive. But, a strange discussion came up on Quora about computers possibly weighing more when information is added to them. I tried looking around but couldn't find a ...
0
votes
1answer
38 views

Learning material on optical computing

I'm looking for guidance to choose material for a self-study of photonics, biased towards optical computing recent advances. My background is of undergraduate level electrodynamics, quantum ...
2
votes
1answer
84 views

Theoretical Upper Bound on Processor Speed?

Barring aside considerations such as heat dissipation, capacitance, etc... (aka any sort of technological issue) what is the fastest speed of a processor? I am told that at distances of 1 planck ...
9
votes
3answers
2k views

How are physics and computer science getting united?

How is theoretical computer science getting united with physics? Phenomena like Quantum Computing uses Quantum Mechanics to be able to compute things, how are computers helping not just to model our ...
1
vote
0answers
39 views

Which model of computation can be viewed as being extended by the currently most relevant models of quantum computation?

Which model of quantum computation resembles most closely the attempts of implementation currently being made? And which non-quantum model of computation is the conceptually closest one to the above ...
0
votes
4answers
216 views

Heisenberg's uncertainty principle for electrons and atoms

Here is a video of Michio Kaku discussing Moore's Law and the quantum mechanical limits thereof. Around the 1:30 mark he's talking about how the chips today have a layer of 20 atoms across (I'm ...
-1
votes
2answers
549 views

how datas are physically stored in and read from hard drives?

well i think the question is clear enough but I will describe more : how datas are physically stored in and read from hard drives ? are they related with spin of atoms in the drive ? Is that method ...
6
votes
0answers
193 views

Estimating the Kolmogorov Complexity of the Standard Model

The Kolmogorov complexity of a hypothesis / theory / model is the shortest computer program that simulates it, regardless of how inefficient executing that program may be in terms of memory and time. ...
1
vote
1answer
401 views

Are We Living in a Simulated Universe? [closed]

If the universe is just a Matrix- like simulation, how could we ever know? Physicist Silas Beane of the University of Bonn, Germany, thinks he has the answer!. His paper “Constraints on the Universe ...
1
vote
1answer
2k views

Projectile Motion with Air Resistance and Wind

I am wondering how the general kinematics equations would change in the following situation. If an object were fired out of a cannon, or some sort of launcher, so that it had both an initial velocity ...
4
votes
2answers
451 views

Optical Drive Physics

I have been recently wondering how is data stored on and retrieved from optical devices like CDs, DVDs, and Bluray. What makes these different storage types different from each other?
2
votes
2answers
936 views

What is the difference of the two stable states of a Flip-flop?

In electronics, a flip-flop or latch is a circuit that has two stable states and can be used to store state information. [...] Flip-flops and latches are used as data storage elements. Such data ...
2
votes
1answer
1k views

How are the CPU power and temperature caculated/estimated?

From Wikipedia The power consumed by a CPU, is approximately proportional to CPU frequency, and to the square of the CPU voltage: $$ P = C V^2 f $$ (where C is capacitance, f is ...
4
votes
1answer
1k views

Air flow coming out of a fan feels much stronger than air flow coming in. Why? [duplicate]

Possible Duplicate: Why is exhaling more forceful than inhaling? If I put my hand behind my computer's system block, I can feel a very strong flux of air coming out, as it is being pushed ...
0
votes
3answers
175 views

Why is it hard to write a computer program to detect patterns which planethunters is asking us to figure out? [closed]

I recently came across this site http://www.planethunters.org. It shows brightness observed for a star vs time. It asks questions like if star is exhibiting variable or fixed pattern. Later it asks if ...