Starry Starry night....
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Holidays ahead

12/19/2005

Click on the links below to see today's lab exercise.

IF you didn't finish the last lab please complete it first - you'll find it listed below the line.

If you have tests for which you need to study, you may also do that - just keep busy, and enjoy.


Link 1!



Link 1A!



Link 1B!



Link 1C!



Link 2!



Link 3!



Link 4!



Link 5!



Link 6!



Link 7!



Link 8!



Link 9!



Link 10!



Link 11!



Link 12!



Link 13!



Link 14!



Link 15!



Link 16!



Link 17!



Link 18!




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Astronomy Exercise, 12/08/2005

I know you do not have time to do a Starry Night Lab, so we'll just have fun with the snow day! There are a LOT of links below.


The Weather channel


Yes, I'm STILL leaving this up for you to use....

1) what is the
Astronomy Photo of the day
for today?


2) What's up in the news? (As related to Astronomy!)

The Universe Today



3) What's visible in the night sky tonight and tomorrow night? (IF the sky is clear!)

Sky and Telescope magazine



Spaceweather.com



E-snowball fight!





The National Weather Service



Astronomy related cartoons




Physics fun/humor



Astronomy comics



Top 10 signs your astronomy instructor may be nuts...



Mars Funzone



Chandra Fun and Games



Huge numbers of fun and useful links!



The Weather channel





Earth Science Photo of the day




********
Astronomy and Physics jokes...

The Physicists' Bill of Rights
Author Unknown
We hold these postulates to be intuitively obvious, that all physicists are born equal, to a first approximation, and are endowed by their creator with certain discrete privileges, amoung them a mean rest life, n degrees of freedom, and the following rights which are invarient under all linear transformations:
I. To approximate all problems to ideal cases.
II. To use order of magnitude calculations whenever deemed necassary (ie whenever one can get away with it).
III. To use the rigorous method of "squinting" for solving problems more complex than the additions of positive real integers.
IV. To dismiss all functions which diverge as "nasty" and "unphysical".
V. To invoke the uncertainty principle whenever confronted with confused mathematicians, chemists, engineers, psychologists, dramatists, and andere schweinhund.
VI. To the extensive use of "bastard notations" where conventional mathematics will not work.
VII. To justify shaky reasoning on the basis that it gives the right answer.
VIII. To cleverly choose convenient initial conditions, using the principle of general triviality.
IX. To use plausuble arguments in place of proofs, and thenceforth refer to those arguments as proofs.
X. To take on faith any principle which seems right but cannot be proven.

*************

The ABC's of Astronomy
by Sally
A is for Astronomy, the science of far out
B is for Big Bang, how the cosmos came about
C is for Chandrasekhar, who knew things compact
D is for Dark Matter, whose existence is a fact
E is for Eddington, and matters radiative
F is for Faraday, and wave planes rotative
G is for Galaxies, which fly between voids
H is for Hubble, who knew disks from ellipsoids
I is for Ionization, revealing energy states
J is for Julian Day, for periodic dates
K is for Kepler, and his revolution
L is for Local Group, a galaxian profusion
M is for Molecular Cloud, a protostellar batter
N is for Neutron Star, the densest of matter
O is for Oort Cloud, that beyond Pluto lies
P is for Photon, the coveted prize
Q is for Quasar, the most energetic
R is for Redshift, revealing the kinetic
S is for Supernova, nucleosynthesis site
T is for Telescope, gatherer of light
U is for Ultraviolet, seen only from space
V is for Virial Theorem, an equilibrium case
W is for Wolf-Rayet Star, massive and bright
X is for X-ray, where hot things emit light
Y is the fraction of helium by amassed
Z is for Zenith, the highest and last.

*************
The ABC's of Physics
by A. Schaefer, A. Gershenson and M. Allersma
A is for ATOM which is really small
B is for BUBBLE CHAMBER where you can see them all
C is for CHARGE which can be quite shocking
D is for DIPOLE gives radiation by oscillating
E is for EINSTEIN who said E=mc^2
F is for FEYNMAN whose diagrams make me scared
G is for GRAVITY pulling things down
H is for HYPERFINE STRUCTURE in hydrogen found
I is for INERTIA explaining lethargy
J is for JOULE a unit of energy
K is for KIRCHOFF'S LAWS to get the current right
L is for LASER a really bright light
M is for MAXWELL and his cool equations
N is for NEWTON and his integrations
O is for OPTICS and all that light biz..
P is for PHYSICIST which is what daddy (mommy) iz
Q is for QUANTUM and fun with Prof. Yao
R is for RELATIVITY what time is it now?
S is for SEMICONDUCTORS which are really cool
T is for TRANSISTOR a useful tool
U is for UNIFIED FIELD THEORY which remains to be found
V is for VOLTAGE (don't forget to ground!)
W is for WAVE with its myriad effects
X is for X-RAY what else did you expect?
Y is for YOUNG'S DOUBLE SLIT EXPERIMENT (what a mouthful)
Z is for ZEEMAN EFFECT and that is all!


****************

A Physicist Considers Consumer Warning Labels
by Prof. Ravi Jain
As scientists and concerned citizens, we applaud the recent trend towards legislation which requires the prominent placing of warnings on products that present hazards to the general public. Yet we must also offer the cautionary thought that such warnings, however well-intentioned, merely scratch the surface of what is really necessary in this important area. This is especially true in light of the findings of 20th century physics.
We are therefore proposing that, as responsible scientists, we join together in an intensive push for new laws that will mandate the conspicuous placement of suitably informative warnings on the packaging of every product offered for sale in the U.S.A. Our suggested list of warnings appears below.

Warning: This product attracts every other piece of matter in the universe, including the products of other manufacturers, with a force proportional to the product of the masses and inversely proportional to the distance between them.

Caution: The mass of this product contains the energy equivalent of 85 million tons of TNT per net ounce of weight.

Handle with extreme care! This product contains minute electrically charged particles moving at velocities in excess of five hundred million miles per hour.

Consumer notice: Because of the "Uncertainty Principle", it is impossible for the consumer to find out at the same time both precisely where this product is and how fast it is moving. (Note: This one is optional on the grounds that Heisenburg was never quite sure that his principle was correct)

Advisory: There is an extremely small but non-zero chance that, through a process known as tunnelling, this product may spontaneously disappear from its present location and reappear at any random place in the universe, including your neighbor's domicile. The manufacturer will not be responsible for any damages or inconvenience that may result.

Read this before opening package: According to certain suggested versions of the grand unified theory, the primary particles constituting this product may decay to nothingness within the next four hundred million years.

This is a 100% matter product: In the unlikely event that this merchandise should contact antimatter in any form, a catastrophic explosion will result.

Public notice as required by law: Any use of this product, in any manner whatsoever, will increase the amount of disorder in the universe. Although no liability is implied herin, the consumer is warned that this process will ultimately lead to the heat death of the universe.

Note: The most fundamental particles in this product are held together with a gluing force about which little is currently known, and whose adhesive power can therefore not be permanently guaranteed.

Attention: Despite any other listing of product contents found hereon, the consumer is advised that, in actuality, this product consists of 99.9999999999% empty space.

New grand unified theory disclaimer: The manufacturer may technically be entitled to claim that this product is ten-dimensional. However, the consumer is reminded that this confers no legal rights above and beyond those applicable to three-dimensional objects, since the seven new dimensions are "rolled up" into such a small "area" that they cannot be detected.

Please Note: Some quantum physics theories suggest that when the consumer is not directly observing this product, it may cease to exist or will exist only in a vague and undetermined state.

Component equivalency notice: The subatomic particles (electrons, protons, etc.) comprising this product are exactly the same in every measurable respect as those used in the products of other manufacturers, and no claim to the contrary may legitimately be expressed or implied.

Health warning: Care should be taken when lifting this product, since its mass, and thus its weight, is dependent on its velocity relative to the user.

Important notice to purchasers: The entire physical universe, including this product, may one day collapse back into an infinitesimally small space. Should another universe subsequently re-emerge, the existence of this product in that universe cannot be guaranteed.
**************

A Lawyer Interpretes the Physicist
by Paula D. (lawyer) and Stephen K. (physicist)
(a lawyer from the Pacific and a physicist from Europe team-up for the Science Humor Ring)
1. Conservation of Energy: The total energy (i.e. the sum of potential and kinetic energy) of a closed system doesnt change under the influence of conservative forces. Closed means that the system doesnt exchange matter with its environment.
A lawyer should never transform potential to kinetic energy without the appropriate safeguards for payment of attorney's fees. The law firm is a closed system too, determined by conservative forces in that - in a law firm you NEVER change the established rule that : "Once the client sits down in front of you, the clock starts ticking and so does billing time." Try changing that and YOU GET FIRED !
2. Conservation of Momentum: Momentum is the product of mass and velocity. As energy is related to time, momentum is to space.
Mass and velocity - the more cases you have, the faster you must work or you lose all of them, including your job. Energy is related to time in that you have more energy before your court hearings in the morning, and depletion usually occurs in the afternoon or when the coffeemaker suddenly churns out decaf.
3. Newton's First Law: A body on which no forces are acting will continue in its state of motion. This means it will stay at rest, if it has been resting initially, or will move in a straight line at constant speed. Moving straight or being at rest is physically equivalent.
If a Partner is not watching, lawyers will continue chit-chatting or just stay idle behind their desks. But once a Partner appears, they start walking in a straight line, at constant speed back to their rooms...
4. Heinsenberg's uncertainty principle: The more precise you measure where a thing is, the smaller is your knowledge about its velocity and vice-versa
A criminal can defy all laws of gravity, in fact, his flight can be faster than the speed of light.... you switch on the light, and he suddenly disappears...and he was there awhile ago !!! no physicist would want to measure his velocity...wanna get killed while measuring ????
5. Quantum Zenon effect: You can keep a system from changing by repeatedly measuring the state of the system
If you keep annoying the judge, you are liable to be cited for contempt. But UNLIKE quantum zenon effect, the system can REALLY change.....you can end up in jail and no amount of physics will save you, better post bail, honey.
6. Theory of Relativity : E= mc2
Energy = mass of clients (squared, or the more the merrier...the more energy you have :) OR
Energy = mass of money of clients, squared or otherwise.
7. Principle of General Relativity: One cannot distinguish between gravity and acceleration....so for example in a case of free fall, you feel weightless because the effects of gravity and downward acceleration just cancel.
Sometimes you want to stand up, but when you see your calendar of deadlines, you sit down again (gravity)...then when the Partner calls you to report on the status of the case at the upper floor, it seems the elevator just wont move and seems to want to stay at your floor....then voila ! it happens.... the great theory of general relativity - if you havent done your assignments on time, you fall into irreparable embarrassment, you just fall.....fall....fall.....deeper and deeper...your status in the law firm cant accelerate any faster...you just go with gravity - down, down, down...


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Astronomy Exercise, 12/05/2005

We will be back in the computer lab again on Thursday, 12/8/2005.

Do the Planetarium activities on pages 437 and 463 of your textbook. Answer ALL questions as you complete the lab.

When you are finished with the exercise using Starry Night Pro, answer the questions below.


1) what is the
Astronomy Photo of the day
for today?


2) What's up in the news? (As related to Astronomy!)

The Universe Today



3) What's visible in the night sky tonight and tomorrow night?

Sky and Telescope magazine



Spaceweather.com



space.com



Earth Science Photo of the day


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