Welcome Definition and 176 Threads

Hi to all, Happy to be here.

ok

Howdy everyone. Glad to join this forum.

I am interested in this message discussion and would like to enquire more information on this

HI all! New here, have tons of questions about physics :)

Hi everyone, I'm new to PF, if someone can guide me through the site then it'd be awesome, thanks...

Hi all! Used to use this site alot, so glad to be back.

I'm happy to join Physic Forums today. And I wish I could learn more information here.

hello everyone :)

Hi !, I'm a student, I enjoy and am interested in pursuing a careers in fields of Physics, Math, IT and engineering........basically STEM !!

Hi thanks fir accepting me My name is daría from chile

Glad to be back! Last time I tried to sign in, I just got the message to email the mods and didn't bother. So a new account it is! I like math.

this website has been good so far. I hail from Earth and come in peace hoping to share and receive knowledge from y’all.

Hello im Josh I found this site via google. I like to exchange ideas in order to create a better place for my kids and yours!

Hello!

Hello everyone I'm new on this forum

I have a motor and a 3 phase generator which I would like to connect together, i.e. let the motor drive the generator and measure it's output. Each have their own type of shaft which do not fit together. I would therefore like to get some proposals, preferably which do not require custom work at...

In this thread I attempt to find a closed form solution to the gradient descent problem for a single sigmoid neuron using basic calculus. If you would like to give pointers feel free, if you see me make a mistake please let me know! Thank you!

My second introductory post because we are always learning, right? I am 35 years old with an Associates degrees in: History, Arts & Humanities. I study people and our interactions across the ages and in the present. One of my scientific passions is Geology and Geophysics. Plate tectonics...

Hello, I'm a high school physics teacher and also working on a PhD in science curriculum and instruction. I've been teaching regular and honors physics for a couple of years and probably will add an A.P. Physics 1 section next year (depending on the school's scheduling priorities). I came...

Hi I am new to the forum. I am a investor, athlete, and a "field physicist." I got a bachelors in physics and Hopefully soon can get a phD. I like to do basic experiments that demonstrates physics.

Computation history is cluttered with variants, by-roads, successes and failures. I really like UNIX/C as an engineer and scientist but mainly use Windows for home computing. ##-## @Klystron

I am so curious as to what I actually have found any input welcome please and thank you

Nothing

I believe the users of good old yahoo web mail might guess what this topic is about just by reading the title. I always liked yahoo because it's the only one site I know of that doesn't ask for domain on login. I've had an email address there for quite a long time, but it has become increasingly...

This is my first time idk if i posted in the correct sub

Hey there! This is Mayank Bhandare, from India. I am a recent graduate in Mechanical Engineering from the University of Mumbai. Though it's a strange switch as many would say, I am planning to pursue a career as a Theoretical Physicist/Cosmologist. I have a couple of entrances the next month...

Well we have here a another undergraduate student from Spain (Catalunya) with a lot of questions and any answer in physics. I'm in my 3d year and the next year will be probably studying in Oldenburg (Germany) thanks to the Erasmus Program (any suggestion would be welcome) . I have a lot of...

South Carolina is ready for the arrival of extraterrestrial visitors. On my way to Charleston yesterday, I visited the UFO Welcome Center in Bowman: Nobody was around. Maybe the caretaker was out for lunch? I didn't try to go inside because I might have fallen into a black hole or...

Hello, I had recently created an account. I'm Justin and perhaps am a physics student studying holographic duality and string theory, hopefully my colleagues were right in having me be forming an account in regards to this website. Anyways, pretty much it.

Hey everyone, new to Physics Forums and happy I've found it. To start, my name is Shane, I currently work for Applied Materials. We engineer, maintain, and support tools in the semiconductor industry. I'm 21 years old, and currently on the Global team. Meaning, I travel 90% of the time...

Well, it's been a while and yes I've missed everyone! Got super busy with life and finally able to slow down a little and try to catch up. What all have I missed... Give me the scoop :cool: I hope to be able to stay up to date on and keep active on here.

Hi everyone! I'm really sorry if I'm using the wrong forum. It's my first time at PF. I'm pretty new to physics, as I began studying it just two years ago, but I'm really interested in the subject of astrophysics so I bought myself and started reading 'Introduction to rocket science and...

It's been a while, hasn't it. Life rolls about, priorities alter, sometimes I feel as though I'm accomplishing something aside from absolute decadence, and as a byproduct of all this, I stray from some truly formative sources like PF. I miss a lot of you, and what I remember this forum as --...

Hello , I'm new to this forums so I wasn't sure where to post this , if I have posted in the wrong board please move it to the right section. I always wanted to become to invent tech. I'm amazed by today's gadgets and I love physics. When I was 14 , I told everyone that I will become a tech...

Hello! This forum has helped me solve some tough physics questions already, but I decided to join because I need more help than I've anticipated. Glad to be a part of this community (for the time being and for any future physics classes that I am required to take).

Hi everyone, I joined up today because I was scratching my head for ages about the Carnot cycle. My question was answered in 20 minutes - how great! I'm currently studying to start a PhD in biochem later this year. It means quitting my job and leaving my home behind so I am looking to suck...

I am Mansoor Mirani from Pakistan. I am in graduate in Geography from University of Sindh, Jamshoro. Physics is one of my favourite subject but unfortunately I have not been able to learn it the way I wanted to do it. It think this is the best platform I find for the discussions in Physics and...

My father was an exploration geologist in Australia mainly, in his early career dad geologically mapped large areas of Australia, South Australia mostly, during the 50s and 60s, and his maps were used by the Dept of Mines. My childhood memories are filled with images of topographic maps on the...

Hello everyone, my name is Evan operating under 'thenoobie001'.[this is also my xbox gamertag if there are any CoD fans out there :)]. I have recently joined this site and I anticipate that I will be doing a lot of forum searching and reading here at the beginning of my membership since my...

Hello there, I am new to this forum, loving what I've seen so far, everyone seems very helpful. Just thought I would say hello to everyone. Thanks, John

This is not meant to be a joke and if you think so go to the next thread. I need to know if there is any way to keep a rip in space open. I will define two different types of tear. The first is a tear but all that can be seen is a dark matter(no pun intended): this is the one I do not need...

I am 30 years old and I thought to refresh my math knowledge. I am glad to be part of this forum, seems very active! Regards

Hello people, how are you? I am a 20 years old student from Brazil. I study Electrical Engineering at USP - Universidade de São Paulo(São Paulo University). My favorite scientific topics are Mathematics(Polemic: is Math a science?), Electrical Circuits and Physics, and not some that are not...

Hi everyone, I'm currently researching graduate schools in mathematics. I would like to go for a PhD. My question is, do I apply directly to the PhD program? Or do I apply to the Master's program and apply for the PhD afterwards? What do people normally do?

http://www.stuff.co.nz/life-style/parenting/68221125/royal-baby-the-first-glimpse-of-kate-and-prince-williams-baby http://www.beehive.govt.nz/release/prime-minister-welcomes-royal-baby-0

Welcome. I spent a lot of time on PF last semester when Googling for similar problems to homework I had trouble with. This site helped me a lot back then. Now, I'm finally registering (I don't know why it took me this long.) I am a BS Physics major. I hope to learn a lot here. Thanks for being...

This is my "Hello Thread". Hi scientists, I hope we could work and help us each other. Happy new year! See you soon...

Hi I'm about to start my 3rd year in my Engineering university and would like some ideas for my Final Year project... We have 2 options. We can either make a model/prototype of something and present it OR we can do a research on a particular field. I'm leaning more towards the research side...

Hi there I am new to this site but I have been reading on it for a while. I have a question, I am building a loading ramp for my box truck to load my lawn mower in. it will be about 12 feet long and 6 feet wide I was wandering what size steel box tubing would be best used for this the...