Equipment Definition and 166 Threads

Well some one have any experence related to axial fatigue testing equipment designing? Have to discuss some concepts and need the feedback.

9th grade student is struggling trying to come up with a design that can meet the below requirement. Any help is appreciated. 1. Homework Statement The purpose is to build a new piece of equipment that can break the descent of an object from a certain height. The object in this situation a...

Homework Statement Chemical-plant equipment costs rarely vary in proportion to (i.e., linearly with) size. In the simplest case, cost varies with size according to the allometric equation, C = aSb The exponent is typically between 0 and 1. For a wide variety of equipment types, it is...

I visited the lab of some collaborators, and they had this device which exactly matches my needs in the lab I work in. Problem is, I can't find this thing anywhere. I emailed the PI of that lab, and he has no idea where it came from. It seems they bought it somewhere a while back and since then...

We were digging through some of the apparatus today and amongst a few dual beam tubes we found this, pictured below It's very similar looking to a dual beam tube shape-wise but as you can see the internal structure is quite different. What is this? After looking at it for a while we suspect...

Noise cancelling earbuds/headphones differ from noise isolating earbuds/headphones. Noise isolation just keeps the sound out, whereas noise cancellation actively produces sound in order to "cancel" noise.I understand how this works technologically, however do these sound waves cancel out so that...

I'd like to learn how to test for these types of cells (living or dead) in water. what do I need to do this from home ? is it cheap or expensive to buy the equipment ? please provide details of the equipment needed and just a rough idea as to the cost of doing so at home. oh yeah once i buy the...

I need some help on the direction to go with this problem. This is a workarm on a leg extension machine and there's 300 pounds (max) coming from the weight stack attached via a cable on the cam. I need to find the total force exterted on this system to double check my results on an analysis...

Hi all, we need to find a current source which automatically disables current after, say, 30 s. Does anyone know any specific names for that? My supervisor said he saw some but never returned my emails with the same question. That's project 'management' in academia for me.

Hello PF. I'm currently tackling a problem at work that I could use some input on. I am trying to gather data regarding the force applied by a swelling material against the ID of a pipe. The purpose is to determine how the force increases with swell before leveling off, as well as to see how...

Found this in a back cabinet. It's old. I think the case was taken off. Anyone have an idea of what it is.

Homework Statement Hi everyone. I'm teaching introductory chemistry this semester, but I don't have much of a chem background. We are about to start acid base titrations. Does the standard solution of known concentration go in the buret tube or the erlenmeyer flask? Does it matter? Homework...

We're going to equip our fundamental physics labs: - Mechanics lab - Electricity and magnetism lab - Geometrical lab - Thermodynamics lab Which brand is qualified in your experience?

Does anyone know, or know where I go could to find more information. Are we allowed to bring in and use equipment (computer& computer related) that isn't CSA approved if the equipment has CE and/or FCC certifications? I can't seem to dig up information on specifically if this is kosher or...

Hey guys, Just want to make sure I'm doing everything right here with some simple calcs. My physics days are long gone and it's been a while since I looked at any of this stuff. A 10,000lb piece of equipment is placed on a flat surface. 2,000lbs horizontal pounds-force is required to move it...

I need help. I am installing new networked alarm panels throughout a building. There is a room where one panel is and that panel is continually having components fail. While in this room it is also very common for me to receive a static shock when coming in contact with any metal. I realize...

We cut the concrete flooring in our plant for some plumbing work and will soon re-pour a slab of 5,000 PSI "High-early" concrete. In order to minimize down-time we need to re-install equipment by drilling/anchoring into new concrete as soon as the curing has yielded sufficient strength. The...

I wonder if AC current follows Sin wave and go through negative and positive cycles alternately, why don't AC equipments, like a bulb, get off and on - off and on...

I am not a classroom student but study what I feel like knowing. As such I don't have access to professional teachers to ask questions like this one. The reason I ask is that my daughter has epilepsy and pulsing lights cause seizures. It is my understanding that florescent lights actually...

Hi all! We're trying to dissolve a mixture of organic matter with a solvent that is highly volatile. Currently, we have to shake the solution very frequently to ensure the organic matter doesn't settle down on the bottom of the flask. However, it takes a REALLY long time for the organic matter...

Hey there, I was looking to buy a plasma globe as a desk ornament at work. Problem is, I deal with circuit cards and other pieces of electronic equipment. None of us wear ESD bracelets, so the components aren't extremely sensitive. I was just wondering if the globe would emit a strong enough...

I saw these two displays in Poole Town Museum. They came from the old local power station. The Frequency Meter appealed to me. I assume it works on the resonance of vibrating reeds and the white end(s) of the reeds at or near resonance will vibrate but the others will not. I'm sure Jim will...

Please list any links in you have them.

In light of the recent monkey photographer controversy, if a humam steals a camera from another person and takes a picture, who owns the copyright? Related story: http://mobile.theverge.com/2014/8/6/5974601/wikimedia-releases-first-transparency-report-monkey-selfie-story That's not to...

Hi there. So here goes. I have been having issues with a replacement chiller unit that requires 230VAC single phase. An identical unit was running on 2 phases of a 110VAC 3 phase supply. I had a start capactior fail in this unit. When I connected the replacement unit, the compressor...

Hi I have been trying to find the types of equipment required to protect 3 phase generators+transformers for a while now but I just cannot seem to find anything. If you could help me out and give me examples of the equipment it would be greatly appreciated Thanks

I want to start playing around with motors, gears, and things like that. I would like to build some basic devices that I can control with microcontrollers. I have looked around at sets for building things... erector, lego, etc. But I haven't found anything acceptable; lego is close with...

When you film something using the microphone on the camera or an external microphone, is there always that hissing sound that you have to remove by running the video through a high pass or low pass filter? Or does it depend on the quality of the microphone? I have a pretty cheap microphone, and...

The difference between BIL rating and Maximum voltage? Like is the BIL voltage the highest it can take in just one instant? how do i know what is the highest continuous voltage a piece of equipment can take? Like for a Cap bank i see a BIL rating but i need to know what's the maximum voltage...

Hello everyone, I'm new to this forum. I'm only 19 years old but I want to major in Electrical & Electronics engineering. So besides some practical skill I've learned from working with my dad I have a lot to learn especially in terms of theory. During my experience I've heard a few companies...

Hello ! This is my first post on the Physics Forums. I am electronics technician employed in mass spectrometry laboratory at RBI Institute, Zagreb, Croatia. My question is related to calibration of RTD sensors, which I must do in another lab or division, and since I developed prototype of...

Greetings all, I need some help identifying a piece of electrical equipment for work.. I myself am a mechanical engineer and have never seen something like this. I have attached pictures below. http://imgur.com/a/J0B8H My initial thoughts was that it was some kind of loadbank or...

Can someone please explain to me what if any is the benefit in using one lab quality 10 MHz OSC to run all your bench equipment ref OSC inputs? And, what about this GPS thing? Why use an expensive GPS synced 10 Mhz OSC source to drive your test bench? Thanks

As a gift I received 25 of these things (the previous owner not knowing what they were). They're aprox 34cm in legnth. The orange bit is closed and doesn't detach, so I can't find any uses for it. The writing on it above the calibration reads... Regardless of their use I will most likely be...

Warning: Rant ahead I get more and more drawings from vendors where all lines seem to be of the same thickness. Makes it awfully hard to tell if a line's a dimension line, a leader, a projection or a real part outline. Do others share my annoyance? Is this an evil of the post-AutoCAD era...

Hi, I am a new business that has ordered some electrical equipment. The first is a packing machine and the plug that the machine is being sent I have attached to this post. It is listed as 220v, 3 phase, 50hz but NEMA does not show this to be the same specifications. How will I make...

A 5lb Piece of equipment is installed on a aircraft on a Aircraft 45 inches aft of the C of G. A new Seat is also fitted 60 inches fwd of the C of G, Weighing 3.5 lbs more than the old seat. What is the resultant moment? I Know its 60-45=15 Im not sure do i have to use the weight for...

Hey I have decided to learn about PIC, but I could use some tips when it comes to compilers, programming boards and the other basic stuff you need to do all the things a beginner would like to do with PICs. I'm planning on learning more than just the basic stuff, so gear that is versatile may...

I hope this is an acceptable location for this post. Does anyone have any experience trouble shooting or access to a help file for the Tel-X-Driver and TEL-218DRV equipment? I have included a copy of my correspondence with the company explaining the situation below. Homework Statement My...

Can these TV Licence inspectors actually tell if a person is watching TV in their home? They even claim to tell what channel a person is watching. If so, then how exactly do they do it?

I will apologize in advance for the simplistic nature of my question. I did some electrical engineering many years ago but specialized down a different path and as such, have not done any EE in nearly five years. I've recently wanted to begin doing some amateur EE however, but creating more...

I want to control the rotation of stepper motors using MATLAB GUI. Its for a bar linkage mechanism with 1 or 2 degrees of freedom. So,I'm thinking of fixing the motor shaft to one of the joints,thereby giving the input rotation. What's the first step I need to take in getting the motor running...

Hi can any point me to a site/paper on how to construct the equipment required for the electron double slit experiment ? Thanks Lachlan

I am trying to set-up an experiment to measure vibrations on different surfaces and how connected surfaces react; I need some advice on the correct equipment and how to set-up the experiment. I need between 3 and 5 vibrating pads, these need to be approximately 10 to 30 mm diameter and be...

Hi Could somebody please tell me what this is? It stands about 1/3 M high, has a spout just above the larger bottom section and the lid with a chimney in comes off to reveal a narrower copper cylinder inside. Is it Hope's? Thanks in advance Caroline

Hello, I have two questions that I have been pondering for some time without arriving at an acceptable explanation. The questions require a little bit of background information: I work on rotating machinery that operate across a range of (relatively slow) speeds, and generally has a...

Hi Everyone, We are an Engineering & Services Company mainly working for Power Generations in industrial field, now we have decided to work in powder metallurgy especially in metal injection molding field, for this purpose we need information about the technology & equipment used in this...

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Is it expensive?

Would it be possible to measure the radial velocity of stars with large exoplanets using amateur equipment?