# Category : Lotus and other Spreadsheets

Archive : ASAPHYS.ZIP

Filename : README.1ST

JIM HENRIQUES: PROFESSOR, PHYSICS, CERRITOS COLLEGE, NORWALK, CALIFORNIA

You are free to use these applications with no fees or restrictions. I

merely ask that, for ego's sake, you credit me with authorship.

M40CURVES.WKS

This is actually used for my pre-algebra class. I supply them with the data

sets (after a discussion of graphing of course) as assign the graphing by

hand (my pre-algebra students are notoriously computerphobes). The next day I

hand out the ASA plots and we compare. In a similar fashion we explore

frequency distribution and basic statistics:

FREQDIST.WKS

One prepares a similar spreadsheet similar to FREQDIST complete with macros. I

have a Las Vegas Day where the students draw cards, throw dice, etc. Once

plotted they get views of probabilities and distributions. I also have them

anonymously write down their ages, heights, income, etc., and plot the class

data for display (we have a big VGA monitor, so a small class can get a good

picture). Both these spreadsheets seems to get the point across.

STATDEML.WKS

One of the first things I show my engineering students is the power of the

spreadsheet to do statistical interpretation. We do a freefall experiment with

HORRIBLE equipment, get reams of crummy data, then analyze it with some

spreadsheet statistics. They use STATDEML as a guide for creating their own

programs. It's good practice in learning a program, statistics, and data

analysis. Notice that the linear regression is rather more tedious than need

be--I don't tell them about the regression package until another lab!! This

lab they do reasonably well.

INTENSTY.WKS

This is a simple radial plot of the radiation pattern (intensity vs.

azimuthal angle) for two antennae separated a certain distance, radiating at a

certain frequency. These parameters are easily changed, and PROFOUNDLY affect

the radiation pattern. However, even after showing my engineering students how

to do this plot, they could not reproduce it during an open book test! In some

ways my pre-algebra students are brighter than my engineers.

CHAOS. WKS

I haven't used this in lab yet, as I am still experimenting. The program is a

simple real number recursion over several increments that show unexpected

convergence to several "attractors". The numbers in column A are the seeds. I

print this data to a file and have MathCAD to the plotting. The bifurcation is

quite apparent, and will be more interesting when ASA5.0 expanded memory

capacity allows me to use more, smaller increments.

FOURIER.WKS:

This is probably the most complicated .WKS file included. I won't go into a

treatise on Fourier synthesis, but here is a brief outline: I chose a simple

square wave (f(x)) to reconstruct using a Fourier series. The function has a

period of 10, and is piecewise continuous from -5 to 0 and from 0 to 5. There

is a discontinuity at zero, so the student must integrate the Fourier

amplitude coefficients in two parts. The integration is trivial, with one set

of coefficients vanishing as well as the even harmonics of the surviving

terms. Differential displacements fill the column to the left of the discreet

instantaneous amplitudes, and the harmonics are shown in a row across the top.

The sums of the amplitudes of each harmonic are in a column to the right of

the data. It is easy to show the gradual "squaring" of the series as one adds

more harmonics by adjusting the range or the @SUMS. In theory you could

calculate as many harmonics and as fine a differential as computer memory will

allow. When ASA5.0 comes out, the LIMits will be even higher (sorry about the

pun). My best students get a real kick out of making this program cook.

One final note for now: we use Vernier Software for much data collection

(temperature probes, timers, voltage probes). Vernier allows for the data to

be stored as a text file, with optional extension ".P". This allows importing

by ASA. Once in, the excess labels can be erased, and the data parsed (if

necessary) and analyzed more completely that Vernier's "Graphical Analysis".

I would be happy to hear from other physics/math people with other ideas

and/or improvements on my work. ENJOY!

Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: http://www.os2museum.com/wp/mtswslnk/