Pictures Definition and 162 Threads

Hello Physics Forums! I just got a new laptop, and I'm trying to transfer a lot of my word documents, powerpoints, spreadsheets and other documents to my new computer through an old flash drive. My concern is that I will accidentally transfer a virus in the process. I replaced my old...

When some people explain how to do a certain calculation through a presentation, I sometimes see these presentations use the buttons necessary to press as pictures. For example, I've seen presentations tell me how to graph certain functions and, instead of saying press "Y=," the presentation...

In pictures that we find of galaxies and nebulas there are usually very bright colors in them. For example, if you look at a picture of the horsehead nebula you typically see pink, purple, red, orange and blue. Are those a real representation of how the nebula would appear to the naked eye...

I am trying to work out the time taken for a tree that has been cut at its base to fall flat to the ground. More detailed picture here ...http://i.imgur.com/RYS3D.png" The tree is not experiencing wind resistance, and is pivoting from the centre of the trees base. the tree also starts at zero...

As promised long ago - pictures from Croatia (and a few from Hungary). There were three parts of the trip. Marzena told me she is not going to sleep in the car or bushes in random places, and that was part of my plan. So I bought her a plane ticket to Split, promised to collect her from the...

Hi all folks. Do any know a good book that describes physics with pictures? I want a standard book, not university, but for the general people. Because now I prepare before I enter the university if I pass the math and physics exam from high school.

Suppose I drop a rock off a cliff at height h. As it falls, I snap a million photographs at random intervals. On each picture I measure the distance the rock has fallen. Ignoring air resistance: x(t) = 1/2 g t^2 v(t) = g t total flight time = T = Sqrt[ 2 h/g] My confusion is that in...

What are "self-similar pictures of bifurcations and fractals"? The context is: 1.5 Deterministic Chaos Chaos brings to mind many things: butterflies in South America changing world weather; self-similar pictures of bifurcations and fractals; and an inability to describe irregular...

The error: "Exception in thread "main" java.lang.NullPointerException at javax.swing.ImageIcon.<init>(ImageIcon.java:167) at Buttons.<init>(Windows.java:12) at Buttons.main(Windows.java:38) Java Result: 1" The Windows.java code: _______________________________________ import...

Please use zoom function for better view. I'd highly appreciate it if you could also add a diagram on your explanation. Thanks!

Hi, Can anyone pls help me with identifying the items in the pictures, with the following list of options: A) An occupancy sensor B) A smoke detector C) A light level sensor D) A speaker E) A timer control F) A sprinkler head G) A thermal sensor H) An emergency light Thankyou. Nick

So the other evening, the last at Mont Cru, nature finally regaled me with a beautiful thunderstorm. So I set myself up and shot lots of 30 sec exposures during an hour of awesome display. Many pixs were useless, between nothing captured and a complete white out, but some dozen seemed very nice...

Hello, I am looking for a software that will allow me to look at the intensity of white light on a picture and display it like a histogram. Any help would be appreciated. Thanks,

this is a small pulsejet designed by me..it produces around 2pounds thrust..This is the cheapest pulsejet engine you could make it costs around Rs.50..i will post the video tomorrow because i forgot to take my cellphone with me..But here is the engine pictures. here is the plan.. here is the...

I need to understand physics (and other) concepts but I'm having trouble visualizing what the equations mean. One example would be an applied math thing - I want to understand what about electromagnetism exactly the Maxwell equations are describing exactly so I can gain insight into what math...

This is from yesterday's volcano activity. http://news.yahoo.com/nphotos/Volcano-erupts-Chile/ss/events/wl/060611chilevolcano

I'm trying to understand the movement of particles due to quantum mechanics. I made this image. It is a magical receptor box. Every time an H atom strikes a receptor, the letter associated with that receptor shows up as a read out on a computer. For example if a H atom hits the top receptor, it...

Some time ago Halton Arp made a prediction that big red shifted galaxies are connected to smaller red shifted galaxies. Does anybody know what exactly was his prediction. Anyway so NASA and The Hubble Heritage Team tried to discredit him using this image: But look what happens when...

Pictures of "electron etc orbits" http://www.sciencephoto.com/images/download_lo_res.html?id=651380013 Are they photographs and the "orbits" happened at some distance form the lens? Then, how much is that distance? What are the actual sizes of these shapings? I.e. how many milimetres is...

This tendency has always baffled me-- or at least, it is a tendency I have observed-- that men are very interested in looking at pictures of women or videos of women and most women have little to no interest in pictures or videos of men. Is this something others have also observed, or has my...

I found this picture of Einstein while trolling the web and I thought it was quite funny. Anyone has any funny physics pictures to share as well?

Where can I find pictures of the Earth taken from different frequences of light other than the visible spectrum? There has to be X ray pics of the planet.

http://www.nasa.gov/images/content/498884main_DF3_Fermi_bubble_art_labels.jpg http://www.nasa.gov/mission_pages/GLAST/news/new-structure.html Could these structures account for the dark matter, or is the density profile inconsistent with two big blobs of matter/energy on both sides of the...

..are here Amazing (Credit NASA)

Hi there, physics nerds! I'm studying astrophysics in Copenhagen, and I had the opportunity to visit a telescope in the Canary Islands (just off the west coast of Africa). It's called the Nordic Optical Telescope, and I was there for a week in August. Among other things, I managed to get 4...

Hi all, What are the common atomic radii that are used for drawing chemical pictures? Is it the ionic or calculated or? Thanks.

I was reading Wiki's article on D. Hilbert, http://en.wikipedia.org/wiki/Hilbert_space, and couldn't help but smile at that photo of Hilbert with the funny hat. Is it for amusing those who can't make out head or tail of the Wiki article? What's the point of having black and white pictures of...

Hi, this is my question: suppose that at time t' our system is in the state | \psi(t')\rangle The probability for the system to be in the state | \phi\rangle at the time t'' is the norm of \langle \phi| \psi(t'')\rangle This in the Schrodinger picture. But how i can write the same thing in...

I think I read a post on this forum about the lack of pictures of damage from the BP oil spill. I found this site today and wanted to share it. Edit by Evo: Sorry, that's not an approriate link. It contains misinformation worded to create fear mongering.

Homework Statement Sketch the equipotential surfaces which result from the following charge configurations: (a) a point charge (b) a spherically symmetric charge distribution (c) a very large, plane, uniformly-charged sheet (d) a long, uniformly-charged cylinder (e) an electric dipole...

These are some pictures I have taken through the microscope. All of the pictures are of recrystalized ascorbic acid except for the last two. The last two are of NH4 with perchloric acid (clear crystals) and chloroplatinic acid (yellow) respectively...

It looks like the on-line graphing program I've used for years is now down: http://www.walterzorn.com/grapher/grapher_e.htm Any recommendations?

These are incredible. http://www.swisseduc.ch/stromboli/perm/iceland/eyafallajokull_20100416-en.html http://www.examiner.com/x-25803-Natural-Disasters-Examiner~y2010m4d19-Italian-volcano-expert-captures-images-of-lightning-over-Icelands-Eyjafjallajokull-volcano If I can get a link to work.

Homework Statement 1. A billboard is to made with 100 m2 of printed area, with margins of 2m at the top and bottom, and 4m on each side. Find the outside dimensions of the billboard if its total area is to be a minimum. 2. A cylindrical soft drink can is to have a volume of 500 ml. If...

OK, so this year we decided to visit Białowieża - small village in the center of the Białowieża Forest, on the border of the National Park. The Forest is what is left of an ancient forest that covered most of the Europe before it was cut down to make place for agriculture. Unfortunately - for...

Homework Statement My books doesn't seem to give a good explanation of tension vectors. I was hoping someone on here could explain them better. I put the picture from the book up. The two questions with pictures are the one's I'm having trouble with. In case you can't read them: The...

http://cmsdoc.cern.ch/cms/performance/FirstBeam/pictures221109/CollisionEvent.png Garrett Lisi has mirrored the official site, in case of any problems with accessibility. http://sifter.org/~aglisi/albums/LHCfirstcollisions.png

My brother recently sent me a couple of pictures from when we were children. I thought it would be fun for members to post pictures of themselves when they were children. Me and my older brother. I'm sporting my new Easter hat. This one my brother labeled "You and I back in the...

I need help Downloading ALL attached pictures of a forum, the pictures are posted on the website under \attachments. I have tried using Extremepicturefinder and picture ripper, but both programs have trouble following the links and threads. All of the pics are posted under a single category but...

Super slow motion photos of a soap bubble bursting. I'm impressed! http://www.dailymail.co.uk/news/article-1199149/Super-slow-motion-pictures-soap-bubble-bursting-stunning-detail.html

Hello everybody... i want a book that talks about some clever applications and problems in the fundamentals of physics >> >> also i want a book that take the famous concepts of physics and prove it or justify it clearly with pictures , mathematical proofs, clever...

So here they are... http://stupidbobby.8m.com/apartment.html There is a caption under all the pictures. Pictures of my bedroom aren't up because my room is complete yet. The costs of moving out on your own is high. I need to buy everything. Can opener, cutting board, garbage bins, couch...

to not function the "copy" feature if someone want to copy the material on the page Thank you!

Can someone take some pictures of Comet Lulin, I will not be able to make it up-North in time ( that’s where my telescope and camera are). I have been reading about it and see it has an anti tail. I never even heard of an anti tail, In some of the pictures I have seen on-line it seems to have...

Homework Statement You would like to check if the battery voltage drops while it is supplying a current of 6A. You use a voltmeter designed to measure voltages up to 20V and having a resistance of 50,000 Ohms. Which of the two circuits below should be used? a.) How much current (in A) would...

I am curious as to how people who are 1/2 white, 1/4 black and 1/4 Asian look like. A typical scenario is where one parent is white/asian and the other is white/black.

Hi everybody i've got some fantastic astronomy pictures.:smile: if you've got any let's share them

7. First I took derivative and got f'(x)= 6x^2-72x+210. divided the whole thing by 6 and found the factors for x^2-12x+35. (x-7)(x-5) which will give me that the smaller critical number is x=5 and the bigger critical number is x=7. 8. First I set the equation to 0 and used the quadratic...

hey guys, hope you can help me with this, here's the picture: 1. to find whether it is increasing or decreasing, f'(x)<0 is decreasing and f'(x)>0 is increasing. so first-> i took the derivative and got f'(x)=12x^2+60x-168 and set it to zero to find the critical numbers. I got x= -7 and x=...

Help me out please ! for #4 I'm preeeetty sure i did it correctly but it wouldn't hurt having someone double check it. for #5 , I'm not sure if i took the second derivative correctly Will be on for the next couple hours trying to understand calculus ... :( Thanks in advance ^^