Home Definition and 525 Threads

So I finish my first year as a Physics and Math double major in a couple of days. I was all set and excited for going back home for the summer [bought my plane ticket and everything (its Pakistan)] until I found out that a couple of my friends were staying back and doing research with a...

For some reason, my WS_FTP95 LE program (originally from Ipswitch) did not transfer to my new computer (with Windows 7). To transfer, replace or update the program, would you have a direct link where I can get the program for free or do you have another recommendation? Ipswitch does not make...

hi this is my first post on here so please be gentle. my names chris and I am an aerospace engineering student and i would like to build a jet engine based around a turbo charger, i know this concept isn't new but its something i would like to build. I am on a tight budget so i need to build...

OK, it wasn't all that fun. A few days ago, my kitchen light fixture over the sink started acting up - not working or working only intermittently. The box over the sink contains a two-up receptacle and a switch. I figured that the switch was toast, so I prepared to wire in a new one. Imagine...

Hi, folks; I seem to have undergone the events of the past couple of weeks in the reverse of the order that one would expect. First, I was kind of dead, but not quite, and temporarily. Part of that involved me extubating myself, which pissed off the trauma crew, so they knocked me out and kept...

Homework Statement major league baseball outfield fences are typically 350 feet away from home plate. Home run balls need to be at least 12 feet off the ground to clear the fence. Calculate the minimun required initial velocity( in mph ) for a home run, for baseballs hit at 15°, 30°, 45°, and...

This thread is dedicated to a wonderful PF contributor, who still lurks among us, zoobyshoe. He checks in from time to time. I check his profile every couple of weeks, he last visited us toward the end of March. I thought I would share a bit of his art with you, see thumbnail. Needless to...

Homework Statement Which of the following are a vector spaces? (a)R = {(a,b,c) 〖 ∈R〗^3 │ a+b=0 and 2a-b-c=0} (b)S = {(a,b)∈ R^2│ a^2=b^2 }..., can I say a =b which will make things simpler? (c)T = {(f∈P_2 (R)│ f(1)=f(0)+1} Homework Equations The Attempt at a Solution...

Any thoughts on what home computing will be like in 50 years? How about 100 years. Real time Google Earth for sure. Much more mind to computer interface. We might put something like a headset on that would read brain info. Artificial intelligence? Here's a quote from another post here-...

a friend and i plan to design and fabricate a sort of home radar/tracking system.the objective goes like this.there is a dark room and we are flying a remote controlled helicopter(a small one).it is desired that a radar/tracking system placed on the floor should track it,follow it and hit it...

Hello all, Maybe you can offer some advice. I have some decisions to make in the near future, I have a few related questions to ask, and I'm also wondering if there are any good options one of you can think of that I'm not considering. First some background. I came to the University of...

I would have posted this in one of the educational forums, but the instructions there seem to indicate that only educators and mentors can post to those forums. So I will ask here: I am looking for sources where I can purchase home education courses on science topics, especially in the physics...

When I was scuba diving last weekend, I noticed several beer bottles on the bottom. They had been there a long time, and were encrusted with barnacles and limpets...and who knows what was living inside. If I had found a fresh bottle (with nothing living in or on it), I'd have picked it up...

Norwegian newspaper has this video clip of a little, hairy monkey from the Yunnan province that made its way into a home. The house owner knew it belongs to an rare, endangered species, nycticebus coucang, and called the authorities. Meanwhile, the little fellow is sedately exploring his new...

Hi I reside in India and last month , our electricity bill was Rs 510 for 163 kW-h Converting to US dollars, it is US$ 23021 at current exchange rates. So the rate is $ 141.24 / kW-h . I want to know what is the cost of electricity around the world for 1 kW-h.

Welcome to the world of Handwriting technology, where we work on the science of handwriting. At Annant Institute of calligraphy Right we Analyze repair, add speed and style to handwriting.We analyze handwriting for children, individuals & corporate, & we expertise in professional Calligraphy and...

Hi all, Is it possible to do the Young's double slit experiment at home? A related question: Can I generate a focussed electron beam from house hold items? Thanks Ravi

Are you the sort of person who sees a new gadget for the home, and thinks it's a must have, or are you the type of person who still has such like a none electric can opener.

mmmm

The Ferris-Bueller home is for sale, and at a very good price. Since it's near Chicago, I thought we should talk Zapper into buying it and making it the official PF house. :biggrin: http://www.dailymail.co.uk/tvshowbiz/article-1344337/Ferris-Bueller-home-goes-sale-1-65m.html It's down...

I've been trying to learn about home automation devices that can be controlled from a remote location. Most of what I've read requires that I have a computer running at home and that I send the commands through the computer. I'm trying to figure out if there are devices that I can plug into my...

Question: Suppose that the travel time from your home to your office is normally distributed with mean 40 minutes and standard deviation 7 minutes. If you want to be 95% certain that you will not be late for an office appointment at 1p.m. what is the latest time that you should leave home...

Hello! Is it possible for me to do an REU at an institution other than my degree awarding institution? If so, is this encouraged? Thank you!

Does anyone know of a material, similar to Plexi Glass, that could be used for a window but does not absorb UV light? Regular glass won't work, I am looking for something that will not easily shatter.

How Can i built carbon fibre parts at home work shop?

Hello, I've been noticing a weird issue lately that I think my fridge is the cause of. Whenever my fridge turns off (thermostat kicks out and stuff) by AV receiver reboots itself. If the receiver does not reboot, my HDMI video signal from the amp to the tv will start flickering until I...

scientists just discovered a planet Gliese 581, located 20 light years away from Earth in the constellation Libra. scientists believe that one part of this planet may be habitable. do you think it may be possible to travel to this planet one day if for some reason the Earth becomes inhabitable...

Hello... This is my last year in the field of electrical engineering and i want to work in electronic desgin or pcb design at home for some companies or some one... Is it possible to do so and if yes do anyone has emails or websites to contact these persons Thank you

If the photoelectric effect causes light to knock electrons out of metals, why don't the metal surfaces in our home lose electrons when we turn on the light? I'm a third-year college student. This question was a discussion question in the back of the chapter, and I thought it was a great...

Is it possible to power an entire house by an HHO generator?

Hello all. I've been wanting to build a Stirling engine at home out of parts that i could easily afford/scrounge up. Not one of those small ones that you hold in your hand, but one that could generate some real work. Enough to run a small generator maybe. The problem is that i have absolutely no...

Hello, am trying to make pcb at my home, but am not sure about the sequence of fabrication steps. i put the board in UV light for several minutes, then i put it in a basic solution and finally in ana acidic one, but nothing happened to my board... What are the names of bases and acids used for...

My wife and I are beginning to save for our first house and I had a question about saving for a down payment. What is the best option in saving for a house? Traditional savings account, IRA, or other? I was thinking an IRA option, but I'm still learning the financial game. I know with a...

OK, I posted here a while back with issues home networking, specifically between varying operating systems (Ubuntu 10.04, Windows XP, Windows Vista, and Windows 7...sigh). Either way, suddenly the other day, I was on my desktop and noticed that I could find my girlfriends Windows XP machine...

Does "The Merck Manual of Medical Information, Home Edition" also prescribe or list some of the medicines which can be useful for the listed disease? Please let me know.

The heater/cooling system (HVAC) at home has a condenser unit. It's a small electric motor sitting atop a shoebox-sized metal container which holds the water dripping from the "fan unit" (I don't have a better technical term to describe the main unit that houses the fan). There is also a thin...

A drop hammer of mass 200kg falls freely through a distance of 2m to strike a forging and is brought to rest after a distance of 50 mm. The hammer does not rebound after impact. The mass of the forging is 500 kg. Determine the average resistance of the metal. please can anyone solve this...

If I have just a regular a GFI like this: http://www.ehwms.com/images/Electric/GFI%20Outlet.jpg I can power each of the two sockets individually by bringing each it's own power line and neutral line, right? (this is what I want to do -- I'm using GFIs for a project (non-electrician home...

i was thinking about how desalination plants work, i haven't heard of one producing powered energy as like an electric company. I was thinking making one on a miniture scale, like in the Armed forces if a trooper doesn't have any iodine tablets he/ she could urinate in a hole then put a saram...

Homework Statement According to the Guinness Book of World Records, the longest home run ever measured was hit by Roy "Dizzy" Carlyle in a minor-league game. The ball traveled 188m (618 ft.) before landing on the ground outside the ballpark. Assuming that the ball's initial velocity was...

I assume people on this forum are full of great ideas having mathematical minds. I use a 60w incandescent worklamp as a heater in winter. Like if I am all rugged up but a certain part of my body is cold like my ankles or hands. I use it once an hour to warm up my hands or ankles. Sometimes...

Today's ethernet networks [LAN only I refer] we mention [1000baseT/100baseT - RJ-45] are broadband in nature or baseband? May mixed PCs send messages simultaneously to each other and internet, all to same network part, under one switch, for example...? eg a HOME DSL NETWORK it it broadband...

Hello everybody. I wonder how can I reach 2,000 Fº at home, the fuel. The thing is I want to shape, and form some metal pieces. But I first need to reach 2k Fº to start shaping the metal. It is a bit thick so I can't work it in cold. I want to work with Blacksmithing here at my backyard. I...

Hello guys, I just want to know how to heat & temper Steel/Iron at home. I can find the material easy I guess. I don't know how to start, how to reach 1,000 Fº at home to give a piece of Steel some "form", I want to give cuttings, curves, and shaping to that piece. But I know nothing about...

Hello guys, I really wonder how can I forge Steel at home. I want to give some cutting and curves to some pieces of steel I bought just to work with. But I don't know how to heat them, how to reach 1,000 Fº at home. I really want to give this pieces some curves and make some cuttings with...

http://www.nbcmiami.com/news/local-beat/Grandma-Arrested-for-Slapping-Granddaughter--92874714.html

I have some old computers at home and I want to put them to work by making a cluster, maibe run SETI or other distributed computing related stuff. I've searched the Internets, found out about Beowulf Clusters, but I can't seem to find any useful tutorial on how to make one. So I'm calling...

Is it just the electronics devices like notebooks, PC's that are rendered useless or as well the actual storage mediums like flash memory & optical discs even when there stored away? Would data on usb external HDD, flash memory, & dvd optical storage be readable after the attack? What home...

I'm not sure if this is the right subforum. This seemed most appropriate. I have a router & modem at home which I use to get a wi-fi signal across the house. The problem is that the computer is situated at one end of the house. Thus, when I'm in my bedroom, which is at the other end of the...

Im not really sure if I am serious about making one of these like michio kaku for example. But i can't find too much info. on the internet about these, what are the parts of it like the electron gun, vacuum chamber, etc. And what do you use to power it, as in the element, a radioactive one...