Eclipse Definition and 125 Threads

Homework Statement Assume two stars are in circular orbit around a mutual center of mass and are separated by d = a. Assume angle of inclination is i and stellar radii are r1 and r2. Find an expression for the smallest angle of inclination that will just barely produce an eclipse. Homework...

Hello, thank you for reading my post. For a story I am working on I am wondering about the plausibility of some star and planet configurations. I have done some web research on my own and learned a lot, but for some things I think my vocabulary and knowledge is too limited to search for exactly...

I saw it yesterday. I live in the Pacific Northwest, which was clouded over. But at about 2:45 - 3:00 PM PDT, at local maximum eclipse, there was a break in the lower clouds, and I could see the Sun through the upper clouds. It was rather fuzzy-looking, but I could see a bite out of it from the...

hi guys and gals a total lunar eclipse will be visible for all Pacific and parts of it for most of USA parts of South America, Central Asia cheers Dave

First discovery of double star that brightens during eclipse Einstein's general theory of relativity explains the phenomenon by Dr. Ken Croswell For the first time, astronomers have seen a double star brighten rather than fade when one star passes in front of its companion. Predicted...

Homework Statement Find the radii of the umbra and penumbra circles drawn drawn perpendicular to the EMS axis, formed at a distance equal to that of the moon from the Earth. Homework Equations (From: http://www.opticiansfriend.com/articles/equations.html#Shadows) D2 / L1 = (P + U) /...

http://www.space.com/25487-total-lunar-eclipse-blood-moon-brightness.html

Hello, everyone. On physics Olympiad in our country I get a interesting example... But, I didn't know how to solve it. Can you tell me how? It is known that the Moon when it is full has the apparent magnitude of approximately -12 mag and the Sun during the day has the apparent magnitude of...

On an eclipsed day,for example,a partially eclipsed day,when I make a hole in a piece of paper and place it on the sunlight,I find that the shadow(Or whatever)of the hole appears like the eclipse.Why?

How Safe are "Eclipse Glasses"? Just how safe are these Eclipse Glasses? Ever since I learned that the sun actually burns holes in the retina of your eye, I've been paranoid of using any device that will allow "safe" viewing of the sun. From what I've been told, everyone has at least 3-6...

Hello and thank you for putting up with this noob question. The directions on the website or anything I have found on the internet are not very descriptive. I have downloaded Eclipse and Java JDK version 7 and successfully installed both of the applications on my computer, but I must have...

If during a solar eclipse the moon tapers one moon diameter, wouldn't a lunar eclipse taper one Earth diameter?

Hi, I'm having trouble getting JUnit tests to run with eclipse. I've looked for solutions but nothing seems to work. Whenever I try to run the file as a JUnit test, it says No JUnit tests found. I tried including the JAR file in the project classpaths (both JUnit 4 and 3), tried both...

I would like to copy some code that I wrote in eclipse to vi text editor in unix without retyping the entire code. Is there a way to do this?

Solar Eclipse Problem (a math problem, not about astronomy) Homework Statement To a good approximation, Earth and Jupiter move around the Sun in circular orbits of 1.49 x 108 km and 7.79 x 109 km radius, respectively. What is the maximum error that can arise in the prediction of solar...

http://img407.imageshack.us/img407/9447/duo258.png Would a CME passing through the Moon's electrically conducting interior affect the Earth's magnetic field any differently than a CME that had not gone through the moon?

Alrighty then :smile: So in order to solve a problem in a previous thread, I simply reinstalled Eclipse, but this time i went with the Parallel Tools Platform since it is supposed to work with FOTRAN too. I created a C++ project first and did the 'Hello World' thing to make sure it was...

So I installed Eclipse 3.7.0 (Indigo) for my Mac (Snow Leopard OS). I initially installed the "Java Only" version. That works fine. I then decided I wanted to consolidate to one IDE for both Java and C++ if possible. So, here is what I did: 1) Checked to make sure I have gcc, g++, gdb...

G'dday My name's Barry. I live in Sydney Australia. We got a reasonably good view of the eclipse of the moon last night. Was cloudy to start with, but cleared up later when the full eclipse happened. The event began about 11.45PM and ended about 2.45AM, so we were in a good position to...

Being on the east coast of the US, I won't be able to see it. Those on the west coast will though. Here is how it will happen. Once in a blue moon, the Earth darts out of its orbit temporarily and blots out the sun. When that happens, you can see all of the sunsets on the Earth reflected off the...

Before reading this article please read the following: NEVER view the sun with the naked eye for any length of time, as doing so may cause irreversible eye damage or even blindness. Solar filters and solar glasses are not made to any officially regognised safety standard in all countries, and...

When I start DrJava in Eclipse the Interactions Pane gives me this: "Could not creat the view: Wait for interpreter to register was interrupted (probably timed out): java.lang.InterruptedException" What does this mean and what do I do to fix it? Thanks

Looking at the earth-moon-sun system, it just so happens that: . The sun is ~400 times the size of our moon . Our moon is ~400 times further away from the sun than from the earth The sun and moon look ~ the same size from Earth and hence during alignment, allows the almost perfect...

would we be able to see a total solar eclipse after about 600 million years from now?

I have already posted the picture in the photography thread, but I will add another here: It was cloudy (still is, and the eclipse didn't end yet) which helped, as without clouds I doubt I could take the picture. EOS and long lens, pictures are slightly cropped (so the angular size of...

Are welding glasses safe to view an eclipse with? We will have a partial solar eclipse tomorrow and I'd like to show my daughter. I have welding glasses and wonder if that is safe. I will also prepare a pinhole-and-screen device to show her the eclipse, but I'd like to let her view through the...

Here's a shot I took at about 11:40PM Pacific Time I used my new lens! :biggrin: Shot info:

There is going to be a Lunar Eclipse on the Winter Solstice. It will start Dec 21 @12:29AM EST. Entering the Earth's Umbra(the shadow of the Earth) @1:33AM. The eclipse will become total @2:41AM EST lasting approximately 72 minutes. The best time to view is 3:15AM EST when the Moon will be...

Problem: Orbital Period - eclipse time - Illumination time ?? Homework Statement An educational institute has decided to launch a small satellite having mass and volume of CubeSat specifications i.e. mass of 1.33kg and volume of 10 cm cube. Due to some launch constraints, there are three...

And goes directly through Oregon. Woohoo! http://eclipse.gsfc.nasa.gov/SEgoogle/SEgoogle2001/SE2017Aug21Tgoogle.html

Every time i try and copy or rename a file in Eclipse, I get the error org.tigris.subversion.javahl.ClientException: RA layer request failed svn: Server sent unexpected return value (405 method not allowed) in response to MKACTIVITY request... help!

If a solar eclipse is visible near the equatorial region on the Earth, does it move from West to East at about 1000 miles/hr?

Homework Statement The moon Titan has an angular diameter of 4.4mrad as seen from the surface of Saturn. The sun has an angular diameter of 9.3mrad as seen from the surface of the earth. Which of the following eclipses cannot be seen from the surface of Saturn (a) A lunar eclipse of Titan by...

Ok, so I'm supprised there is not a thread about this one yet. lol Hate to admit it, but this is by far the best movie in quite a while. They just keep getting better and better with every new Twilight movie. How many of you actually watched it, and what were your thoughts about it?

About the wave nature theory ! In the case of Lunar Eclipse Hello all :) First I'm glad to be a new member of this forum .. Anyway .. as I noticed that if someone thought about a theory or a physics inquiry you share your thoughts and solve the problem .. So what came to my mind months ago...

Personal account It was 2004. I was looking up stuff on the computer. Where my computer sits I have a relatively clear view of the hallway. Out of the corner of my eye, a figure passes by my hallway. No one was home and this could not have been a substantial human being. The figure had...

Yay, I'm in central US. http://news.yahoo.com/s/space/20100625/sc_space/moonillusiontosupersizesaturdaylunareclipse

Hi, I use Eclipse, MinGW++ and the library Halcon and can't get it right. There must be something wrong with the linker options as I get the error message: "undefined reference to ... ". My settings under -> Properites -> C/C++ Build -> Settings-> MinGw++ Linker -> Libraries are...

I am pretty ignorant of this language. I am working from a '...for dummies' book to teach myself and after the first few pages I have already stumbled upon a problem. I have attached a code, pretty simple one, which I'm trying to run but there are some errors and I don't know how to resolve...

Validation of relativity has been tested by measuring the apparent position of stars as our view passes by the edge of the sun. A difficulty being that we can not easily view stars with the sun so bright so we wait for an eclipse. I have a few questions: 1) Is this still a difficulty...

I was instructed by my parents not to eat anything during the solar eclipse that occurred yesterday. Though this is rubbished as a superstition, i also hear reasons that goes like, "The UV radiation received by Earth is higher during the eclipse period triggering the growth of some microbes and...

Solar eclipse captured! i captured some videos and photographs today, using my mobile camera [3.2 megapixels :) ] pls help me to understand my clicks, have u spotted the orange colored circular sphere what is that and as u can see the shape changes with the...

There are many speculations according to which there are certain changes taking place in the Earth's gravitational field during a total solar eclipse(or partial) like strange movements in a oscillating pendulum before and after the eclipse(as observed by many scientists). How factual are...

I discovered an eclipse cycle. It will be called the Wells cycle ( Garrick Wells ). It is simply a cycle of 51649 days. I believe that if you see an eclipse, then 51649 days later, another will likely be seen from your same location. I've have indeed found an example of this while probing the...

Hi all, http://www.newscientist.com/article/dn17481-july-eclipse-is-best-chance-to-look-for-gravity-anomaly.html" the link given above elucidates that the gravity falls during the solar eclipse. I could not understand the logic. Can some one help me in understating the reason for this? why...

Total solar eclipse 2009/07/22 http://www.youtube.com/watch?v=6T4Gjk4uwoY"

I've become fairly proficient in C (relatively speaking) and want to start learning C++. However, I can't for the life of me get it working with Eclipse. I keep getting errors saying it can't find iostream, even though minGW works perfectly when compiling C. My brother recommended Visual C++...

How exactly do I compile and run C++ code in eclipse as though it were in pico? I've wrote code that I know works, just a simple "Hello World" program, but I can't figure out how to make the one file program run!

Hi guys, Does anyone know if any astronaut/Moon lander has ever photographed/measured in some way an eclipse of the Sun by the Earth? Natski

From a terrestrial perspective, could Venus have ever eclipsed Mars?