RESOURCES
NAVIGATION
Several of the projects WLT have been involved with have spun out resources for use or trial. Some of these are software demonstrations while others are animations. The software is produced in-house and scanned for viral infection prior to posting. It is, however, highly recommended that you perform your own virus scan prior to use as there are elements out there who delight in spreading such infections. All resources here are supplied "as-is" and carry no warranty for suitability of use.
The latest resource. Use an iPad as a virtual experimental bench to investigate friction, sliding and rolling of objects.
GLOBAL CLIMATE
Many thanks must go to Mick de Pomerai for his editorial input in preparing the descriptive texts supporting these models. Thanks Mick!
Climate calculator:
This software resouce provides a simple climate calculator to support climate modelling by considering a two compartment model (atmosphere and surface). The application runs in windows - download from here (673kB ZIP).
Tipping points:
This software resouce supports climate modelling and considers the so-called "tipping" points of a system. The application runs in windows - download from here (325kB ZIP).
SEXUALLY TRANSMITTED INFECTION
( STI or STD ) NETWORKS
Sexually transmitted infections or STIs (sometimes called STDs) can be passed through social sexual networks so that although you may have only had a single partner you are in fact still at risk of contracting an STI from other members of the network through the links. This short (2 minute) animation demonstrates the principles behind this concept and can be used to support health education and promote screening.
Download a demonstration here (Windows Media Player WMV format - 2.48MB)
DNA
This animated representation of a DNA strand was developed to help with the "how to breed the optimal tin of beans" activity. It can be run on a continuous loop to provide a rotating 3d view.
Download a demonstration here (Windows Media Player WMV format - 336kB)
WAVES AND INTERFERENCE PATTERNS
This is an animated demonstration of wave superposition and how two coherent sources can produce a characteristic interference pattern. This is being developed as part of a physics demonstration toolkit. A YouTube animation is available below:
RADIATION & RADIOACTIVITY
These animated resources were written and produced by us for the commercial radiation protection consultancy, IONACTIVE ltd, to aid with training courses and they have kindly made them available on their excellent and informative website.
The following links will take you to each of the resources described.
- Electron Positron Annihilation
- External & Internal Radiation Hazards
- The Medical Linear Accelerator (LINAC)
- The Geiger-Mueller (GM) Tube Radiation Monitor
- Radiation Dose
Some example extracts are shown below
Radiation dose
The production of X-rays
The medical LINAC
E-COLI
E-Coli occurs naturally inside us and causes us no harm. There are, however, some variants (or strains) that live in other animals, for example cows, that if ingested by humans can cause illness. E-coli increases its number by dividing so that one cell becomes two, which divide to become four and so on. This leads to exponential growth characterised by the time to double the number of organisms. For E-coli this can be quite quick; about 20 minutes! To show how this growth can lead to an alarming increase click on the "GO" button above. After 24 hours one E-coli has multiplied to give an enormous number - equivalent to 3,300 tonnes of bacteria! This usually doesn't happen inside a single person as the growth is eventually limited by a lack of the resources needed for growth!
The above gives a size comparison for E-coli.
THE ENDOCRINE SYSTEM
This demonstration shows a selection of endocrine glands in the [male] body. Activate and hover the mouse over the red regions to obtain a brief description.
A movie has also been produced to help give a very brief introduction to the endocrine system and what happens when a part of it goes wrong. In this example the "malfunction" leads to diabetes.
Why 2-cubed isn't 6
This is an animated demonstration of what 23 or 2 cubed is. This was posted after a PSCI-COM mailing list request for a video explaining why 2 cubed isn't 6.
The mathematics of folding a piece of paper
What's the mathematics behind the folding of a piece of paper?
More mathematics - compass and straight edge
These are older animations that formed part of a commercial package - higher quality versions with a software driver are available; please email for details.
1. How to bisect an angle
2. How to draw the perpendicular bisector of a line
3. How to draw the perpendicular to a line from a point off the line
4. How to draw the perpendicular to a line from a point on the line
5. How to draw a line through a point and parallel to another line
6. How to draw an equilateral triangle
7. How to draw the tangent to a circle from a point
8. How to draw a pentagon
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