A Level Physics
Keplers Second Law Interactive
List of paradoxes This is a list of paradoxes, grouped thematically. The grouping is approximate, as paradoxes may fit into more than one category. Because of varying definitions of the term paradox, some of the following are not considered to be paradoxes by everyone. This list collects only scenarios that have been called a paradox by at least one source and have their own article. Although considered paradoxes, some of these are based on fallacious reasoning, or incomplete/faulty analysis. Informally, the term is often used to describe a counter-intuitive result.
Daniel McClelland Presentations
We have been increasingly using Flash animations for illustrating Physics content. This page provides access to those animations which may be of general interest. The animations will appear in a separate window. The animations are sorted by category, and the file size of each animation is included in the listing. Also included is the minimum version of the Flash player that is required; the player is available free from http://get.adobe.com/flashplayer/. The categories are:
Physics 1 for OCR Cambridge OCR Advanced Sciences: Amazon.co.uk: David Sang, Gurinder Chadha
Biscuit Tin Alarm Project Someone is stealing the biscuits! Your mission, should you choose to accept it, is to design a circuit which will give an audible alarm as soon as the biscuit tin is opened. Navigation Custom Search Biscuit Tin Alarm#PCB#PCB#PCB#PCB#PCB#PCB#PCB#PCB#PCB#PCB#PCB#PCB#PCB#PCB#PCB#PCB#PCB#PCB#PCB#PCB#PCB
Flashing LED unit - Electronic Circuits and Diagram-Electronics Projects and Design Description. The circuit given here is designed as an LED flasher which produces a rotating effect when the LEDs are arranged properly. The circuit has very low current consumption and can be operated from even 3V button cells. The IC 1 (CMOS NE555) is wired as an astable multivibrator wired at a duty cycle of 50% and 4Hz frequency and drives LEDs D1 to D6.The second IC, IC2 (CMOS NE555) is working as a trigger pulse inverter and drives LEDs D7 to D12.The circuit is arranged such that the ICs sink the current consumed by the LEDs. At low operating voltages like 3V, the CMOS NE 555 performs better when arranged in sinking mode rather than in sourcing mode. The LED D13 remains permanently ON.
By simple, I mean that these circuits only flash one or two LEDs. This is opposed to the light chaser circuits that can flash four or more. Of course, the simplest LED flasher is simply to use a flashing LED. The problem with that approach is you have no control over the flash rate, but it does have its use for eye catching displays for selling stuff. The circuits below give you that control, plus they can flash two LEDs alternately. Simple LED flasher circuits
The electronic color code is used to indicate the values or ratings of electronic components, very commonly for resistors, but also for capacitors, inductors, and others. A separate code, the 25-pair color code, is used to identify wires in some telecommunications cables. The electronic color code was developed in the early 1920s by the Radio Manufacturers Association (now part of Electronic Industries Alliance (EIA)), and was published as EIA-RS-279. The current international standard is IEC 60062. Colorbands were commonly used (especially on resistors) because they were easily printed on tiny components, decreasing construction costs. Electronic color code
Colour coding of resistors
G482 Module 1 Checklist and G482 Module 1 Keywords This first module covers the essentials of electric current – the flow of charged particles (electrons in metals and ions in liquids). We look at the total charge transferred (Q=It) and how quickly they move (drift velocity, where I = Anev). KA – Circuits Part 1 (introducing current) Practice question from Teaching Advanced Physics (TAP) The three programmes below are from an excellent series called Shock and Awe presented by Professor Jim Al-Khalili Module 1: Electric Current | Mr Matheson's Physics