Probes Definition and 44 Threads

I think my probes may not be working correctly and was seeking advice from those who know better than me. I have the Tektronics p5205 differential probes with the 1103 power supply. When I power up a test device I see a voltage waveform appear on the channel connected to the probe. The probe is...

Hello, I have the demonstration below. A population represents the spectroscopic proble and B the photometric probe. I would like to know if, from the equation (13), the correlation coeffcient is closed to 0 or to 1 since I don't know if ##\mathcal{N}_{\ell}^{A}## Poisson noise of spectroscopic...

I was wondering if humans send spacecraft far enough into space in the future (for example Alpha Centauri or other star systems further away), is there any particular distance where it might make more sense to communicate between star systems by making a star blink with some sort of shutter...

Hello, Using a CCD camera and simple lenses, the probe of the cantilever and its surroundings are to be imaged. Since the cantilever is 50 um wide and some of the surroundings are to be imaged, the optimal image magnification is from 4 to 8. I therefore used a convex lens with a focal length of...

This post is slightly different from a previous post sent to mathematical forum : this is because I talk about here the MATLAB function "eig" with 2 arguments but this concerns actually the combination between 2 biased tracers in Cosmology context. I am looking for a common basis of...

I am interested, in the context of my work, in the cross correlations between a spectroscopic probe (which gives a 3D distribution of galaxies with redshifts, which is also called spectroscopic Galaxy clustering, GCsp) and a photometric probe (which gives an angular distribution, that is to say...

Firstly, I am a Mechanical engineer working in the aerospace industry and I know very little compared to the collective community here and my formal education had to do with practical and basic stuff, so apologies if I’m overlooking a basic principle or something. my idea: what if we launched a...

I've been reading about this a bit and stumbled across something that said its desirable that the heat source not be something that emits a lot of gamma radiation. Other than hazards to a technician, does this have any effect on the device its being used on? Why would it require extra shielding...

I haven't seen any posts about it but I am curious to know how far are the probes from Earth... Voyager 1 Voyager 2 Pioneer 10 Pioneer 11 Do they have any chance of colliding with an object?

I am amused by how skillfully most of the texts I have avoid discussing reference electrodes in electro-chemical measurement-They simply start out by discussing the H2 and Calomel electrodes with no further explanation. Both have certain hazards and seem overly complicated. So--why are these...

Hi the difference between a loop antenna and a magnetic probe (B-Probe) is only that the loop antenna works in far field and B-Probe works in near field? The standard features of magnetic antenna (antenna factor, impedance matching, radiation patterns, efficiency, ecc) have the same definition...

So yeah... Is there a way of doing " measuring " electricity and not using probes? Laser perked?

industrial quality, water proof with corrosion resistant connectors. something a public aquarium would use. it doesn't matter if their capacitance, resistive or voltage sensing. maybe I should have posted this in the chemistry forum but it doesn't really mater I guess.

Which part should i refer to tecdoc 602 when it comes to the QC of uptake probes and well counters?

1st tope, in my sci-fi universe let's say there is a warp drive that can power a ship that can travel 10*c. One of the first things I have people doing is coming up what is called "The Big Picture Project" which is installing this drive onto probes and sending them out unmanned and have it so...

If a plasma is created at one end of a solenoid and heads down towards a target with a density and temperature too high for Langmuir probes, what other instruments can measure the density with a strong signal that is easy to interpret?

I am working on a system that uses capacitance sensor probes, the system components are the probe, triaxial cable with LEMO connectors, BNC cable, oscillator, and a demodulator. I have had some trouble finding ways to troubleshoot the system other then basically testing continuity. Are there any...

Hi. I am writing a scifi story that involves some (i hope) realistic science. The conceit is to show, in the near future, some use of cheap "ballistic" probes of the inner system and eventually TNS and heliopause. They would be small objects launched in large numbers, designed to gather very...

Hello there, I am currently using LDVT probes to measure linear displacement (goes without saying, but I said it anyway). The problem with this is that the wire for the probe is very cumbersome and requires extra machining to external parts in order to accommodate the wire without disruption...

I'm looking at purchasing some oscilloscope probes off amazon but it says that they're made in China. I know that all our electronics are from there, but it does it matter with probes? Are they all from there mostly? Anyone know where I can get good quality probes from? Or should the ones...

How do people get into jobs working with developing and constructing things of the likes of Curiosity and New Horizons? I know they have different functions but I'm really interested in being involved in working with space probes. I want to do Physics at university, but would mechanical...

What is the power source for space probes and how it is sustained for long flights in space? Also how do space probes reach phenomenal speeds (Helios attained 252,792 km/h !)

1/2/2012 One new NASA spacecraft is orbiting the moon, another aproaching, to study moon structure via its gravity. 2nd NASA probe en route to moon on New Year’s Day http://www.washingtontimes.com/news/2011/dec/31/nasa- spacecraft -reaches-moons-orbit/

Why can an oscilloscope have the probes changed in position and have a dc current reading but not for an ac current? I put the oscilloscope leads with the probe at D and the ground side at A, and there was no waveform, why is this?

Did the Soviets have an incentive to keep the data secret?

Will there be any problem if we interchange the terminals of the four probe?

The Voyager probes are traveling at non-relativistic speeds, at the edge of the solar system where the gravitational field is about 0 so we could consider them a rest frame. If so, from my calculations using the formula for time dilation: \tau(t) = \frac{c}{g} \operatorname {arsinh} \left(...

I just want to make sure I understand this clearly. Light travels at 186 000 miles/second right? So if something was 10 light years away would that mean that it would take 10 years going at the speed of light to get there? Wouldnt it be possible to make a probe go even half that speed? I don't...

Hi everybody! I have some troubles with the farfield probes of the software CST MWS. I am designing a loop antenna and I want to measure with farfield probes the V/m at a certain distance from the loop (obviously in far - field region). After positioning the probes, I have obtained a certain...

I place Hall probe b/w two electromagnets and a +ve reading of magnitude of magnetic field is observed , but when i rotate the hall probe , -ve reading is observed on gauss meter . What is happening ?? Also recommend books from where I can study about magneto resistance ,

Hi, I'm reading Data Structures and Algorithm Analysis in Java (Second Edition) and I'm on page 178, if anyone owns the book. I know It's a computer science book and this is a math subforum, but the question is largely a mathematical one involving probability. You just need to understand what a...

Help with magnetism- hall probes- difference between 3 types -URGENT Given 3 uncalibrated hall probes A, B, C, a solenoid of a known number of turns and length and a long straight wire. I have to discover which of 3 probes is a metal, a p-type semiconductor, and an n-type semiconductor.The...

I'm intreaged by our history of space exploration. On Pioner Venus2, four sacrificial probes were sent through the Venusian atmosphere while they quickly streamed back their data to the orbitor. They were destroyed when impacting the surface. One of the devices on the probes was a gas...

Hi, my name is Giancarlo from Turin, Italy. I am 30, and I am an Aerospace engineer. I am working on a my own project for a new kind of space probe. Some years ago, while I was surfing in the web, I’ve found something about future of space exploration. I’ve read about solar sails, inflatable...

http://www.scsun-news.com/news/ci_7938886

http://people.csail.mit.edu/rahimi/helmet/

OK the title is a bit practical, I've made the question somewhat more theoretical (technical, whatever), in particular: One is given three bodies: two relatievly massive (for example the Sun and a massive planet like Jupiter) and one relatievly small (for example a satellite) - meaning that its...

Do you guys consider this a possibility? or maybe even probability that we will eventually send out self-replicating probes out into space?

Do you guys consider this a possibility? or maybe even probability that we will eventually send out self-replicating probes out into space?

Hi, How is a space probe planned to be fail-proof? And how is the trajectory calculated?Is it easy to do or requires huge calculations?

Stupid Question #2 for today: I started trying to read hep-th/0403247, QED and String Theory, last night but I really don't understand this concept of probe D-branes. When they say that they're taking a probe Dp-brane in the background of a D9-antiD9 brane system, is the Dp-brane part of the...

this is a great site for learning and discussing ideas... well i have two questions 1. Whats the objetive of the mission space probe b? was it launched yet? 2. Has been ever performed any experiment searching for the speed of gravity? (like fizeau's for light?)

As most of you will recall, there was considerable public outcry when the Cassini probe was launched with its nuclear power supply. However, no alternatives to nuclear decay were offered as a power source. The main thinking seemed to be that the probe should just go without the power it...

When you foretell that will be sent the first Von Neumann probe?