Recent content by kwah

Edit: Yes, I think so though I fear not a perfect yes. To clarify, within an experiment I have a timer error in the the variable t of \pm 0.13s . I believe this to be constant for all values of t . The value I need to plot on a graph is \frac{1}{t^2} but do not know how large the error...

Hi, For an experiment I have a value for the error in time t (s) to be +-0.13s but I'm having difficulty getting from this to an error in t^-2 for the error bars drawn onto a graph. My values for t are in the range 36.84 - 24.88seconds. The range for t^-2 is 0.0007368 - 0.0016155 s^-2...

To stop my posts becoming too lengthy, I figure I'd add this to the bottom. I forgot to mention that the IR readings for the bulbs remained constant with none of the fluctuations seen in the luminoscity test. Here is a copy of the photograph of the experiment.. apologies for the poor...

The very very little data I have to hand is showing that, at approximately 2cm from the edge of the bulb, for an 11W fluorescent bulb it is fluctuating between ~680 and 800 (distance from peak to trough ~ 120) A 20W fluorescent bulb showed fluctuations between ~680 and 900 A 10W pearl bulb...

Sorry, I just noticed a significant problem with my explanation which could lead to confusion - to clarify, electrical current to the bulb was constant. The joulemeter itself looks similar to a regular extension cable - it plugs into the mains socket and then the device plugs into it. There...

I'm accessing it from my school's network so I find it highly unlikely that it is the cause of AdWare. Yes, I've tested on three separate machines (on the same network) and each display the popup every time the page is loaded. The computers are using XP SP2 with Internet Explorer 6.0, it...

Hey.. Just been looking at the site's archives via Google and came across https://www.physicsforums.com/archive/index.php/t-187556.html So far, the problem has been limited to this page and results can be repeated, but a popup to http://www.skypoker.com/poker/sky_lobby?aff=1231 appears...

Do you mean wrapping multiple figures underneath a square root symbol, for example? Use {} brackets. \sqrt{90 + 10} x^{\frac{10}{5}} (I'm not sure about the last one but yeahh ... Have a play around and report back if it works or not =] ... I'm not aware of latex working in the PF...

Personally I think that, in the near future, the next advancements will be in terms of performance as opposed to new hardware etc. I mean, super-cooling or the use of super-conductors inside home computers are likely to be coming soon (in the next 20 years) and if not, I believe that at...

The extra USB cables are needed to supply extra current to the HDDs in order to reach maximum read/write speeds. As stated by russ_watters, the best option would be to use a USB hub - it could be compared to a network router - which basically joins anything from two to eight or more USB...

Sorry, I'm not overly familiar with the terminology? Are you asking how often did the fluctuations occur? It is better described as a sinusoidal curve, and there was no fixed distance in time before it repeated - in other words, it varied anywhere between 5 and 25 seconds but more commonly...

Could the answer be a treasure map? Or a quest? With each of the sentences describing the steps needed to get through each stage? As for ending with an X, most treasure maps have the treasure located on the map with an "X" symbol. Regards, Kwah =]

Hey... After recently doing a practical in an English A2 Physics lesson, my lab partner and I noticed various odd results happening. The basic setup was a mains joulemeter (set to flash every 100j) in series with a bulb holder/socket type thingy... Next to it, a GLX Explorer (an electronic...