Let's start with the motivation - I'm trying to think of ways to talk about building coordinate systems operationally, ideally without directly using ideas like "space like geodesics" that one needs for fermi-normal coordinates. The ideas behind geodesics don't strike me as terribly...
I'm writing a novel in the general category of science fiction, although it's set just a few years from now. I've gotten some good suggestions and information from members of this forum. There are a few questions that I feel require the help of a professional astrophysicist and an aeronautical...
hi guys,
have you ever read any science book which have stories involving electronics or semiconductor?
i mean not a textbook,
maybe similar to Brief History of time by Stephen Hawking or Elegant Universe by Brian Greene which is fun to read without advance knowledge in Physics
do you...
let A_i be an odd integer, s_i be the square of a_i and t_i be the triangular number, (s_i -1)/8. Same for a_j , s_j, t_j, etc. Define Multiplication of n X A_i , etc to be n * s_i - t_j and division to be the reverse of this process. I found that
n X A_i X A_j X A_k = n X A_k X A_j X...
Hey guys, let's say I were to define a new mathematical object, a novel type of number for example, and I am trying to determine its various properties (arithmetic, exponential, logarithmic, etc). Now, let's say I am able to use these numbers to produce solutions that agree with expected...
Hi Everyone,
I appreciate any useful feedback and advice on this project as honestly it has become the bane of my existence and a real downer everytime i look at my half assembled guitar. Guitar? yes guitar and I know one might be tempted to dismiss this post or just refer me to the myriad of...
Choose two whole numbers, say 2 and 1.
Add them and yield 3; multiply them and yield 2.
Repeat using those new numbers.
3+2=5; 3x2=6
5+6=11; 5x6=30
11+30=41; 11x30=330
41+330=371; 41x330=13530 etc.
Have such sequences been explored before? Their generation is relatively...
I heard some rumors about a new book coming out.
from what i heard, the book, titled 'I am number 1', tells a story about One, who lives
in a numberbased world. the world is divided into clans . every number that lives in this
world is a member of a clan according to what composite prime...
(Please go ahead and move this if it's in the wrong section.)
I'm a science fiction writer doing research for my latest book and hoping someone can help. A technically competent character (far more competent than me with my long-ago high school physics) - let's call him Jake - needs to build...
Each state gets to select how they pick their electors based on whatever method they want. Imagine if they made it an auction: people can give money to the state, and whoever gives the most money by the election wins (you can give money in support of a candidate). Anybody is eligible to give...
Please Help! I'm writing a novel involving worm holes and asteroids/meteors
I thought it would be best to ask the experts in the field to make sure I don't get lynched when this book comes out.
Please help however you can. The date during this particular incident is Feb 14, 2016, 11:47 pm...
PForums,
I am a writer working on a novel and as part of my job is to research the science behind any idea, I have to make sure is it plausible in real life.
So, my question is in regard to Necrosis of the Epidermis. Is there any known diseases that can cause necrosis on the Epidermis (outer...
PForums,
I am a writer working on a novel and as part of my job is to research the science behind any idea, I have to make sure is it plausible in real life. I did some research about three years ago for the novel I am writing and got the opinion from scientist and medical experts in regard...
Writing Sci-fiction Graphic Novel need advisement in "space travel"
I've used VASIMR rockets as a reference and cited them as precursors to what now allows "rapid stellar travel" at say Earth to Mars in forty eight hours. Any advice on how this could be at least theoretically possible?
Here's a line from one of my characters "Take too long to aim. Stay close to the holster…and don’t lock yer’ arm. A to B, fastest way between two points is a straight line. Simple physics." I'm confused on whether that's basic physics or geometry. It's in reference to a quick draw like that of a...
Hello!
I'm redesigning my never-to-be-finish sci-fi novel, yet another futile to come up with scientifically based interstellar travel propulsion. My latest consideration is based on article[1] and possible extensions of those ideas. Anyway, I'm looking for an independent opinions on the...
This seems to be a very interesting low-tech system to harness solar energy. I would greatly appreciate any input, critical or supportive, from the many knowledgeable posters who frequent this forum. You can click on the link and watch a short video, or just read the description of how it works...
Triangular numbers T(n) = n(n+1)/2. Certain triangular numbers are also square numbers: T(0) = 0 = 0^2; T(1)= 1 = 1^2; T(8) = 36 = 6^2, T(49) = 1225 = 35^2; T(288) = 41616 = 204^2; ...). It is well known that the arguments of the square triangular numbers {0,1,8,49,288 ...} have the recursive...
Hey,
Sorry if this sounds mad but I have been searching for a while and I am stumped. I am not very well versed in medical knowledge.
I am writing a book in which the main character is terminally ill in hospital. I just can't pick an illness and need some help. I just need some...
Does anyone think the U2 song "No Line On The Horizon" might be a tribute to Larry Niven's novel Ringworld? The novel describes an engineered, rotating ring-shaped "planet" that occupies an entire orbit around a star. The inside of the ring is populated. Looking afar (e.g. spinward, or...
Hey to be honest I am new and don't know very much about science. I don't know if this is even the right place to post this. I am writing a science fiction novel, and basically I want to know, if it is possible for a special element (go with me here) to destroy all types of metal without...
Doublethink is a concept of George Orwell's novel 1984.
"The power of holding two contradictory beliefs in one's mind simultaneously, and accepting both of them."
"Americans tend to define politeness in terms of "friendliness": smiling, telling "white lies", pretending to like people even if...
Dear All.
I am working on a uni project building an ergometer for an MRI machine. I was interested in purchasing a disk brake system to control the resistance and the power output for the ergometer. The application requires that all parts to be non magnetic as it will be used in an MRI...
Dear All.
I am working on a uni project building an ergometer for an MRI machine. I was interested in purchasing a disk brake system to control the resistance and the power output for the ergometer. The application requires that all parts to be non magnetic as it will be used in an MRI...
Dear All.
I am working on a uni project building an ergometer for an MRI machine. I was interested in purchasing a disk brake system to control the resistance and the power output for the ergometer. The application requires that all parts to be non magnetic as it will be used in an MRI...
Hi,
Hope it's ok to post this not sure where else it could go and you seem like a bunch of bright chaps who could give me some good feedback so:
http://www.savefile.com/files/777513"
It contains adult content so please be warned thanks :wink:
[Moderator's note: the message is posted because it had to be
an enormous work to write it. LM]
I am posting an unusual version of the standard relation for
the gravitational red shift embodied in general relativity. This
new version uses the Klein-Gordon equation, sans psi notation,
and gives...
what do you all think of this idea? It's being developed by people at TU DELFT in holland...
http://www.lr.tudelft.nl/live/pagina.jsp?id=8d16d19a-e942-45aa-9b52-48deb9312e92&lang=en
promising?
What do you think of this crazy looking engine.
http://www.greensteamengine.com/
And a steam engine that powered an aeroplane.
http://www.tinypower.com/airplane.htm
Looking For A Fantasy Novel...
A while back someone told me about a fantasy novel that he was reading and I can't remember the name of it for the life of me.
These are the things about the story that I remember him referring to. It seemed that it was about a ragtag group of people on some...
Hello everyone. I'm trying to find a fiction novel that deals with historical issues in a particular region, e.g. Memoirs of a Geisha (Japan), The Kite Runner (Pakistan). The only problem is that in this search, I cannot use any novel that I have read. The dilemma: how can I know whether the...
I decided to try my hand at initiating a discussion. In particular, I'm interested in what others think about the rather novel (Brayton Cycle) engine design at (www.starrotor.com) and its claims? It's, in principle, the same type of continuous burn engine as in jet aircraft, but with somewhat...
The Nobel Prize
What has been something that really amazed you and has been awarded the Nobel Prize.. in any field.
Is there anyone here who doesn't think highly of the Nobel Prize?...
I was wondering if there were any known solid elements, natural or synthetic, which radioactively decay into a gas.
It would be cool to watch a block of it become more and more sponge-like, and therefore less dense, as it decayed - structurally crumbling until finally no solid could be...
I may edit this post considerably so if it interests you, you may want to recheck it from time to time.
Two of the most interesting questions in Physics relate to the value of Electric Charge. Why is it's value quantized and why does it have the particular value of appr. 1/137? This is not an...