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Education |
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Mathematical Symbols
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An Overview
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Here is a table of some of the most frequently used math symbols. Please feel free to send me any additions you would like to see added.
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| Symbol |
What Is It? |
| + |
Adding Sign. Often referred to as the 'plus' sign. |
| - |
Subtracting Sign. Often referred to as the 'minus' sign. |
| x |
Multiplication Sign. Often referred to as the 'times' sign. |
| ÷ |
Division Sign. |
| = |
Equal Sign. |
| | | |
Absolute Value |
| ¹ |
Not Equal to. |
| ( ) |
Parenthesis. |
| [ ] |
Square Brackets. |
| % |
Percent Sign - Out of 100. |
| å |
Big Sum Sign - Summation. |
| Ö |
Square Root Sign. |
| < |
Inequality sign. Less Than. |
| > |
Inequality sign. Greater Than. |
| ! |
Factorial. |
| q |
Theta. |
| p |
Pi |
| » |
Approximately. |
| ^ |
Perpendicular. |
| Ð |
Angle Sign. |
| ! |
Factorial Sign. |
| \ |
Therefore |
| ¥ |
Infinity |
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Science
Downloads |
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 TeslaMap |
 4677
kB |
 98/2000/XP |
TeslaMap can quickly, easily,
and accurately design all parameters of a Tesla
coil.
- Create and explore theoretical designs or
modify existing designs for maximum efficiency.
- Use the TeslaMap database to save your designs
and view other proven designs from well-known
coilers.
- TeslaMap also comes with an MMC designer and
other useful calculators.
- You can print a coil design summary and export
design parameters to text files.
- TeslaMap can be used with, and convert between
standard and metric measurements.
- Real time help and advice makes designing easy
for beginners, and the design checker helps
detect potential trouble in you design
parameters.
- A help file is included in the installation
package. |
 Home |
 Screenshot |
 Download |
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Data
Master 2003 |
4.5
MB |
95/98/ME/2K/XP |
| Programmable scientific and
technical graphics optimized for automation of
test and measurement systems, data acquisition
and post-process. Especially suitable for
scientists who would like to make
high-performance, precise measurements in the
experimental research. Features include powerful
visual tools (graphic editor, plot digitizer,
base line subtractor), wide set of numeric and
symbolic calculations (integration,
differentiation, smoothing, etc), linear and
nonlinear NLSF (Levenberg-Marquardt) regression
analysis, configurable user interface and more.
You can visualize, edit and analyze data
produced by any instruments with RS-232
interface or another numerical data sources.
Embedded ActiveX-compatible scripting
environment allows you easily add new custom
operations and integrate this software with
popular desktop applications. |
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RadioWORKS |
64 kB |
95/98/NT/ME/2000/XP/2003 |
| RadioWORKS is a tool for
calculating various items related to radio
waves. It enables you to calculate the
wavelength and proper antenna length for any
given frequency, and also includes an 'Inverse
Square Ratio' calculator, useful for estimating
how a proposed power change will affect your
range -or- how a proposed distance change will
affect your power requirments. |
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Home |
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3D
Solar System |
22 MB |
98/ME/2000/XP/2003 |
| A rolling advanced 3D solar
system with all the planets and some big moons
orbit. If you have a very fast computer - set
'True Worlds'-option 'On', and you will not be
disappointed! You can manually select view of
planet or moon and the camera takes you there.
It includes options like 'Freeze All', 'Height
of view', 'Orbit speed / Distance', 'Light and
Shadow on/off', 'Atmosphere on/off', 'Rotation
speed', 'Bank Angle', 'Model scale' and 'Zoom
scale'. Support 3D or none 3D card and changes
of GFX resolution. You can also save the
preferences. DirectX. |
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Planetarium |
512
kB |
ME/2000/XP/2003 |
| See the brightest 2500 stars,
all 88 constellations, all nine planets and the
moonphase from 1600 AD to 9999 AD from any
location on earth. Click star on screen for
detailed information. Geocentric and
heliocentric views also available. Define your
own five locations for quick switch. Tiny
program, but great planetarium, especially for
teachers and students. Print todays night sky !
Nice visuals, smooth animation, simple controls,
good planet data. This is the Windows version of
the classic Planetarium software of 1992. The
DOS version didn't work with todays fast
computer anymore. But it was downloaded for 13
years, and one of the first of its kind,
especially the animantions and colors. If you
need a quick overview when and where a planet,
star is, this is your perfect joice. And it is
really for free, no registration required. So
try it and see yourself! |
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TCConverter |
283
kB |
95/98/NT/ME/2000/XP/2003 |
| A free temperature to emf and
emf to temperature converter tool for common
thermocouple types. TCConverter does not use the
approximate inverse functions to convert emfs to
temperature. It has a unique converting routine
which ensures the emf to temperature converting
accuracy of 10e-12 by using the TC's Reference
Functions. This version includes C, D and G type
thermocouples. |
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NOC |
1906
kB |
98/ME/NT/2000/XP/2003 |
NOC is a free program for
protein structure model-building, visualization,
validation and analysis ...
Current NOC Topic:
- Auto-fit residues' side-chain against density
data (experimental function)
- Solid surface creating and electrostatic
potential, hydrophobic force coloring
- Hardware stereo view supported in NOC
- Side by side stereo view in NOC |
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Home |
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Home
Planet |
6.8
MB |
95/98/Me/NT4/2000/XP |
| A comprehensive Earth and sky
simulator for Windows which displays the Earth,
tracks satellites, asteroids, and comets,
includes an extensible multimedia object
catalogue, a simulated telescope for viewing the
sky at any magnification or location, a database
of more than a quarter million stars, and a
complete hypertext help file and introduction to
astronomy linked to the components of the
program. Displays include the illuminated
portion of the Earth, the Sky, the Telescope,
the Earth as viewed from a satellite, the Moon,
or the Sun, an orrery, panels displaying current
information about the Moon and planets, and
more. Real-time astronomical information can be
exported to other applications via DDE. |
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Orbital
Viewer |
586
kB |
95/98/NT4/2000/ME/XP |
| Features: Draw Any Atom, Draw
Any Molecule, Three Types of Rendering,
Asymptotes, Translucence and Index of
Refraction, Animations, Stereo, Cutaway,
Lighting, Save TIFF, PPM, BMP, AVI, and VRML
files. |
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Home |
Screenshot |
Download |
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Alcyone
Ephemeris |
8055
kB |
98/ME/2000/XP |
| Alcyone Ephemeris is an accurate
and fast astronomical ephemeris calculator
covering the period 3000 BC to AD 3500. It
calculates heliocentric, geocentric, and
topocentric positions of the Sun (Earth), Moon,
and planets in ecliptical, equatorial, and
horizontal coordinates, with optional
corrections for parallax and refraction;
rectangular coordinates, velocity, acceleration,
apparent diameter, magnitude, phase, lunar
libration and more. |
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GrandTour |
341
kB |
3.1/95/98/NT/ME/2000/XP/2003 |
| GRANDTOUR can simulate space as
seen from the Voyager and Giotto spacecraft. In
addition, GRANDTOUR can generate scenes from
arbitrary points in space or the Earth, with the
spacecraft visible to the observer. The planet,
moons, and rings of interest (or comet, nucleus,
and tail), stars, the sun, and the spacecraft
are all accurately drawn with wireframe
representations. Hidden line removal is done for
the body surfaces. The motions of the bodies
themselves are highly accurate, with errors no
greater than 500 kilometers. The user has
considerable control over the time step, field
of view, etc., and many frames per second are
typically generated. The program was originally
developed at the Jet Propulsion Laboratory by
John D. Callahan to assist in the analysis of
science and optical navigation data. In
addition, the program was filmed by the BBC as
part of a NOVA documentary on the Voyager Uranus
encounter, and by the Four Point Entertainment
Company for a commercially available video on
Halley's Comet. Program conveniently runs from
any Windows/DOS. |
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Teaching Tools |
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Memorization
Master |
365
kB |
all |
Memory development and testing
software. Now anyone who claims that he can
memorize things can be tested by our
'Memorization Master' computer program.
'Memorization master' is used to control your
memorization results.
It can be used:
- As a memorization technique training tool;
- To determine skill level of a person who has
followed a specialized memory training course;
- To determine initial memorization skill level;
- To test lecturers of the courses aimed at
developing general memorization capabilities;
- To organize Memorization competitions. By
using the program you can compare your memory
speed capacities with the officially recorded
results.
The program tests:
Memorization volume, Memorization reliability
and Memorization speed.
These characteristics are automatically
summarized in the 'Memorization skill increase'
index (as compared to the norm). |
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Teach2000 |
3.4
MB |
all |
A private teacher to help you
memorize a foreign language, topography or even
the history of Italy by date. Improve your
school results with this free trainer.
- Included examples guarantee a quick start.
- Easy handling of foreign symbols.
- A question can have multiple answers.
- Twelve dictionaries included for looking up
translations and synonyms.
- Add pictures and spoken word to the questions.
- Easy recording of your own text.
- A large number of test styles.
- Examination of vocabulary, but also sentences,
dates, capital cities etcetera.
- It is possible to predefine multiple choice
questions and yes/no-questions.
- Ancient Greek font included.
- Unicode enabled.
- Easy import/export of lists. |
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Wordopedia |
282
kB |
all |
| Wordopedia (Wurd-oh-pee-dia) is
a free dictionary program, designed to be
redistributed. You simply edit the 'wrdped.lst'
file to create your own dictionary. Then you
redistribute this EXE file and the dictionary
file. |
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Home |
Screenshot |
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|
Atlas
of World History Map Animation |
2587
kB |
98/Me/2000/XP |
| Free historical atlas software
for Windows PCs. Computer map animation--a great
new way to visualize history! 4000 year
animation shows empires growing and countries
changing. History of Europe, Africa, and Asia
from the earliest countries to the year 1000. |
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Home |
Screenshot |
Download |
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Centennia
Napoleonic Edition |
2246
kB |
all |
| Centennia Napoleonic Edition is
a subset of the Centennia Historical Atlas. It
covers Europe and the Middle East during the
French Revolutionary and Napoleonic period. You
can follow the march of French armies from just
after the Revolution, through the rise of
Napoleon's great French Empire, his unsuccessful
campaign in Russia, and on to the final demise
at Waterloo. It was one of the most dramatic
periods of modern European history and
demonstrates fully the capabilities of the
complete Centennia Historical Atlas which covers
ten centuries of western civilization. |
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AudiFlash |
513
kB |
all |
| AudiFlash is a free program for
creating and using auditory flash cards.
AudiFlash is ideal for practicing and preparing
for oral exams and other tests. Audio flash
cards provide several advantages over
conventional quizzes and tests. Unlike multiple
choice quizzes which give you the answers,
auditory flash cards truly test your memory, as
you aren't presented with any options.
Furthermore, creating and using audio flash
cards is much faster than manually typing
questions and answers! |
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FET |
2900
kB |
95/98/NT/ME/2000/XP/2003 |
| FET is free software to
automatically schedule the timetable of a
school, high-school or university. |
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Home |
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TypeSpeed |
49 kB |
95/98/ME/2000/XP/2003 |
| Key board training simulator for
further growth of high typing speed. TypeSpeed
has profound statistics (for every key and
finger). It shows "week parts" - reserves for
growth of typing speed. Two languages of
interface: Eng. and Rus. |
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Home |
Screenshot |
Download |
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Kiran's
Typing Tutor |
7 MB |
95/98/NT/ME/2K/XP |
| Kiran's Typing Tutor is packaged
and written for Microsoft Windows operating
system, which lets you to learn Touch Typing and
improve typing skills and speed in a very easy
way with in the shortest possible time. It has
got advanced features like Typing Lessons,
Typing Practice, Typing Tests, Numeric Typing,
Kids Typing, Typing Games, statistical graphs,
finger preview and key preview. |
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Teachers
Report Assistant |
475
kB |
95/98/ME/XP/NT4/2000 |
| Free time saving utility for
teachers who word process student reports.
Produces professional sounding, individualized
report cards in the shortest possible time.
Complete with an online database of teacher
comments. |
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