Recent content by Lyuokdea

Without seeing the code it's very hard to guess where the error is...i assume it's just some sort of typo error (y acceleration being changed instead of x, something like that) One thing you should always do for orbital simulations is to let conservation of energy fall back out of the code...

here are some of the questions that kids sent in... this doesn't seem so bad now, as many of them are pretty good questions...some (specifically the quasars one) I think are quite hard to definitively answer...others show some misunderstanding of the concepts - which should be pretty easy to...

Great example...this is the sort of stuff i was looking for... I'm getting an incomplete list of some of the questions they wrote down to ask (though they will probably be asking more questions spontaneously)...I'll try to put them on here when i receive them. Thanks! ~Lyuokdea

They are supposed to be writing and asking questions - so I'm not sure what will come up. But I assume there are going to be asking fairly basic stuff ~Lyuokdea

Hi All, So I'm a current physics grad student - who's supposed to give an outreach presentation (over skype) to some 5th graders who have been learning about Black Holes. I have no problem with the technical content - but does anybody have some good ways to explain things to elementary...

It seems that it is an error with the setup with my system... going into hidl and typing: y=-2 if y lt 0 THEN BEGIN t=2 ENDIF gives a syntax error on the ENDIF command...however i believe this is entirely correct. Please correct me if I'm wrong, or let me know of a way to fix that...

Put this in the astro forum, since you guys are the most likely to be using this software...please move if that's inappropriate: I have IDL/Healpix installed on my system, and I'm trying to run what I think should be a fairly simple set of commands, but the code is freezing in the first line...

Not that this is really an astronomy question per se, but astronomers are most likely to know the answer. I have a file containing a sky survey that is in healpix format, and I need to extract the data at certain longitudes and latitudes and at certain frequencies... In a traditional fits...

I'm fairly experienced with computer hardware and software, but I've been out of the game for awhile in terms of buying new machines. I'm looking to buy/build a computer for academic work (computational astrophysics). I have about $2000 to spend, and I really want to maximize the power that this...

The worst written science "article" I've ever seen a journalist produce I'm just appalled, I don't even know what to say...I don't think this is even in a blog, it appears to actually be an article by fox news (and it came up on their main page) I guess a second issue is...what do you do...

I thought you meant ridiculous commercials like this: https://www.youtube.com/watch?v=td6m3OhO5zE ~Lyuokdea

How did you obtain those answers? Try separating the equations for position into the x and y components. ~Lyuokdea

I assume you mean that this factors as m={(1+i),(1-i)}, and not that 0=(1+i)(1-i), which doesn't make sense. now you have solutions for m, which you can plug back into your assumption that y=e^{mx}, i believe what you're missing is that you are factoring that solution for m incorrectly in order...

Even when you get the energy into the middle of the ocean (i assume you're doing that for safety?)...you're going to have a lot of line loss trying to get the power to any usable region...unless you're talking about this being a large enough operation that you would build a superconducting...

Welcome to PF, so you know, you're not going to get a lot of responses this way...you've shown no work in trying to get these answers, and nobody here will give you answers. Please review the rules for posting homework questions, if you follow that format, you're sure to get responses...