Exploration Definition and 107 Threads

As an assignment i need to figure out the most efficient way to convert heat to electricity and so i searched through the internet and came across Prof. Hagelstein's work which is called semiconductor technology. In short, the technology is based on the principle of thermionics by replacing a...

I thought that the high school debate topic for 2011-2012 would be fun to share. Any thoughts on how space exploration and development of space can be implemented is appreciated. Topic: Resolved: The United States federal government should substantially increase its exploration and/or...

I am starting this thread with an observation and three questions. I post this only as a starting point. I would appreciate any comment on the search for a unified theory. I am an amateur physicist at best, yet it often seems as though the scientific world over complicates the search for...

i know that motion of source can change the frequency of wave. constant speed motion will not change the wave progagation relative to water itself.but from the point of a observer at speed 0, the propagation speed will change. so my question is what will happen to frequency? thanks for help...

I am working on a design for a human operated technological exploration suit. I have the energy supply worked out and designed to scale and tested in small scale prototype. I would like to put together a team from here to help develop this unique system for deep sea exploration. I would also...

Hello! I wanted to see if anyone here would be able to help give me some advice about my University education. I've just graduated from High School and I got my marks on my Diploma Exams back (In Alberta, Canada there is a Standardized Provincial Exam at the end of each Grade 12 course that is...

I really would like to suport the ideology that's helps science and space exploration. Capitalism, Socialism or a Mixed Economy, Socialist Market economy etc.

Hi, First of all let me say that my answer to the question in my title is "absolutely not!" I think space exploration is extremely important not only because it is inspiring and amazing but it also provides so many important spin off technologies. But with everything that has been going on...

Hello everyone, I'm a junior in high school and I've been having trouble trying to figure out my life career. I currently have a "B" in chemistry and have kind of been gliding my way through the year, not applying myself because of this unsureness of a career. Well I've always been...

proof xn < n!

It is no secret that the days of mankind are numbered on Earth. Humans have the whole universe to explore to find resources or another spaceship. Will this be taken seriously by the general public or will it remain a dream of a fanatical few? Is there future in space exploration and would a...

We don't care about our space program.

I'm investigating the power available in a free flowing river. I'm attempting to capture this power with a cross-axis (wind turbine style) turbine. The equation I have for available power is: P = 0.5*m*A*v^3 with m=mass, A=area swept by blades, v=horizontal (into the turbine) velocity of...

Homework Statement how do we measure 2 forces on an angle? let's say we get an object that is moving ( a rocket?) the gravity pull it down while the rocket engineer gives more force. however to reach the highest height, we shot it at 90 degree(horizon). and also at that time, the...

Wreck of renowned British warship found in Channel http://news.yahoo.com/s/ap/20090201/ap_on_bi_ge/shipwreck_discovery Odyssey has an ongoing legal matter with Spain over another wreck that was salvaged, the Spanish galleon Nuestra Senora de las Mercedes y las Animas, which sank off Portugal...

What do you guys reckon to the odds of us finding alien life? The fermi paradox: 'If there are all these billions of planets in the universe that are capable of supporting life, and millions of intelligent species out there, then how come none has visited earth?' I reckon there exists...

Homework Statement Prove any cyclic group with more than two elements has at least two different generators. Homework Equations A group G is cyclic if there exists a g in G s.t. <g> = G. i.e all elements of G can be written in the form g^n for some n in Z. The Attempt at a...

1. In Jan. 2004, NASA landed exploration vehicles on Mars. Part of the descent consisted of the following stages:? Stage A: Friction with the atmosphere reduced the speed from 19300 km/h to 1600 km/h in 4.0 min. Stage B: A parachute then opened to slow it down to 321 km/h in 94 s. Stage C: Retro...

I was having a discussion with one of my professors the other week about human exploration of space. He said that the only reason for continued manned exploration and settlements on other planets would be if we were to find signs of life on another planet like Mars. I disagree, I believe that...

For those in Aerospace Engineering, this might be of interest. This report highlights 22 technical areas of R&D under NASA's Exploration Technology Development Program (ETDP). Review of NASA's Exploration Technology Development Program An Interim Report...

The Background: I am currently a CS undergrad and doing very well in my courses, I am finishing up the 200-level courses this semester with A's and will be taking some 300-level courses next semester. After next semester I would have enough CS courses to complete a minor in the concentration...

My school offers a degree in Earth and Space Exploration. To me it sounds interesting and I'm thinking about double it majoring along with geology. And since there is already a lot of overalp in classes it probably won't add too much classes wise. It seems like a very general degree and I'm...

If: sin(i)=i \frac{e^2 - 1}{2e} what does sin(xi) equal?

Hello. Let me start by asking your forgiveness for my lack of grammatical skill. I know I need work in this subject. None-the-less, I'd like to ask a couple question concerning my dream. Please keep in mind that college is quite a ways off. I'd like to be prepared now though. Along with my...

Hi Physics Forums! I've been lurking for a couple months now and decided to post after laying out a 3-year Applied Physics BS plan. You must be thinking why three years for a BS. Well I've been in school for three years now, and have finally figured out what I want to do for the rest of my...

Hello folks, I was wondering about a possible probe sent to alpha centauri which would be able to do a deep scan of the system, maybe for a month, and then send back results. I then wondered, that if the probe was exposed to different gravitational conditions, let's say favourbly, would...

i would love to witness something like this, i still don't quite understand what is happening tho haha http://en.wikipedia.org/wiki/Gravity_wave

Do the molecules of a gas move randomly when they aren't colliding, or is it only when they have elastic collisions with other molecules? I know it's a retarded question, I don't know much about physics. Also, does the temperature of a body depend on the internal energy of it, or just kinetic...

(I thought I'd repost this into the appropriate section) Hi, I'm a semi-sophomore in Engineering at a community college in Massachusetts. We don't have engineering classes, but a great Physics, Chemistry, and Mathematics department (My Linear Algebra class has 6 students in it). I plan to...

I know it would take an obscene amount of energy to put any type of manned spaceship within reach of neighboring stars... but why can't tiny probes, maybe the size of a baseball, or if necessary a marble, be sent instead? Say we explode a nuke to fling a few of these 'spaceballs' towards Proxima...

Some interesting ideas Europe floats future space ideas http://news.bbc.co.uk/2/hi/science/nature/7053057.stm As compared to $100 bn /yr for Bush's fiasco. Esa, Nasa team up on key missions http://news.bbc.co.uk/2/hi/science/nature/6767183.stm Major space missions move ahead...

so embarrased askin so much :redface: On a table there are 14 cards. On each card there is a number between 1 to 1000. Show it is possible to divide the cards into two piles so that the total sums are the same.

I need to ask 10 opinionated questions about space exploration. I have 9, but I need ideas for the final one. My first 9 are as follows: 1. Do you think space exploration is worth the cost? 2. If you could, would you go into space as an official NASA astronaut? 3. If you could afford...

hi lately i have been reading in maths a lot and started to look more deeply into 'proof'. however, i have come across a few proofs that seem a little 'silly'. for example, taking to an extreme, the extremely long proof (many hundred of pages) for 1 + 1 = 2. now i havn't actually read this...

http://www.technewsworld.com/rsstory/56068.html Seems he is serious about it. Without doubts,he deserves to go if he wants to. So far it's just zero- G training,but I remember reading he dreamed about longer living in an Earth orbit some day.

Alright, this may seem a bit of a childish question, but for my sake I need it answered. So please stay with me. Alright, pretty much what this is all about is the effect that space exploration has on the Earth's air supply. We were all sitting around talking about the creation of a space...

What are the absolute saddest songs you have ever heard? I was just thinking about some of my favorite songs, and I noticed that they are all either extremely invigorating, or so sentimental and innocent. I guess we like music for the emotional qualities you get out of it. Loud music can...

A few weeks ago NASA announced it's next generation of rockets. Based on The APollo design it will take us to orbit, ,the space station,and even The Moon. My questions are, do we want to do this? This would be taking us backwards since it's based on APollo technology. Is it reusable? Will it...

Hello :smile: While I was browsing through all the contributions for this weeks PF Photo Contest - "When You Wish Upon A Star" I remembered a book which was given to me as a gift when I was 11 years old. (a few years ago :rolleyes:) It told the story of manned space flight. Well today...

What does "simplify" means in this case: Simplify each of the following: 1. sin(3pi/2-x)

http://www7.nationalgeographic.com/ngm/0507/feature5/index.html Demand for natural gas and the resulting land-use pressures are pitting America's Old West against the New. http://www7.nationalgeographic.com/ngm/0507/sights_n_sounds/index.html...

am i right to assume that zero point energy is the energy that a piece of matter must have to equal its mass via E=mc^2 or is it something else. also with the copperhaggen interpretation is it right to assume that by following it in its most literal scence that it implies that god exists.

Hi every one, Happy to be back. I took a long break from PF. Proud to tell you that I have a new baby girl now. Being a stay at home mom, I have decided to volunteer in our school system. I have already set up a meeting with the school officials regarding this. Probably I will work with...

Hey everyone, I came across a really cool article in a magazine about a new space-suit that researchers at MIT are developing. Check it out http://mvl.mit.edu/EVA/biosuit/index.html . The magazine article looked more impressive, but you should be able to get an idea of what it's about at...

Hi, I started the U.S. Aeronautical and Aerospace Association, and will begin my studies of Aviation Science and Aeronautical Engineering during the summer term of 2005. I was hoping to find people around the same age group or level of intel. Others are also welcomed! Here is information about...

This post is intended for individuals who are currently at the college level, or surpassed the college level and hold an interest in space travel. I represent the USAA (U.S. Aeronautical and Aviation Association.) More information available on the group at our website...

First off, sorry if this is the wrong forum, obviously I'm new here, so not sure quite how things go :wink: Anyway, I've been thinking a bit, and wondering exactly What space is, or what the current theory on it is. From what i have thought about myself, it seems that space would have to...

Hall Effect! Hey guys, I'm having a little confusion. Have spent too much time in trying to work through this. . . In performing the Hall Effect experiment, I took data of the Hall voltage versus Temperature. I performed this three times for different fixed B, magnetic fields. The...

I've been thinking.. If time is what a clock measures, at what rate does time pass? By definition, the same rate as the clock's hand moves, but that's just circular. Then, there's also "everything is stationary wrt itself", so how does any change occur at all? It just dawned on me that it is...

Hey there I just saw a show on Discovery about spacetravel, and a little question arose as the show ended: In the documentary, by my observations aged 3 -4 years, they mentioned a plane going to Mars to explore the planet. In the animations it looked a lot like conventional airplanes with...