All posts by Peter Terezakis

“No cause for immediate concern” ?

(CNN) -- Six tanks at the Hanford Nuclear Reservation in southeast Washington state are leaking radioactive waste, the governor said Friday, calling the news "disturbing" even as he insisted there are "no immediate health risks." "News of six leaking tanks at Hanford raises serious questions about integrity of all single tanks," Gov. Jay Inslee said Friday afternoon on Twitter.

On the shore of Washington state’s Columbia River, six radioactive containment ponds are leaking in Hanford, the largest nuclear superfund site in the United States.

53 million US gallons (200,000 m3) of high-level radioactive waste,[5] an additional 25 million cubic feet (710,000 m3) of solid radioactive waste, 200 square miles (520 km2) of contaminated groundwater beneath the site[6] and occasional discoveries of undocumented contaminations

According to Washington State Governor Jay Inslee there are, “no immediate health risks from leaking nuclear waste.”   The half-life of two isotopes of weapons grade Plutonium are 14.4 and 24,000 years there is plenty of risk and reason to be concerned.  With all respect to the Governor,  “are you kidding me/us?”  Or is it just that since nothing can be done to safely dispose of these man-made isotopes, the sound bite is to assume an existential position and simply not worry as nothing can be done to put the genie back in the bottle?

What is to happen with San Onofre, an antiquated nuclear facility, sitting on a fault line, on the Pacific coast, mid-way between Los Angeles and San Diego?  Will the eventual leaking of nuclear waste from their holding tanks also not become,  “cause for immediate concern?”   And speaking of “holding tanks” with the half-life of Plutonium being what it is, how long are these tanks supposed to remain in place and to what end?

Not to attempt to assign responsibility to the Public Utility Commission or the multi-national energy corporation Sempra Energy, but nuclear power would simply not exist if it were not for the federal subsidies which it has historically received, as well as the shift of construction costs and operating risks from investors to taxpayers and ratepayers, burdening them with an array of risks including cost overruns, defaults to accidents, and nuclear waste management.

 

 

Pendulum and Energy: Newton’s Shadow, continued…

3000 miles $15

Energy = (Force) (Distance) • Voltage = (Current)(Resistance) • Newton = (meter)(joule)
Potential Energy: PE = m x g x h
PE = 4.53592 kg x (9.8^) x (1.2192 m)
531.5038611456
ASSIGNMENT:
Calculate the energy stored (in joules) in your pendulum using the mass and height measurements, and record this online.

Potential Energy: PE = m x g x h
PE = 4.53592 kg x (9.8^) x (1.2192 m)
PE = 54.192 Joules

Using the duration you measured, calculate the average power, in watts, at which this initial energy was transferred to the environment.

Watt = Joules/second = 54 Watts/second. Each cycle of the pendulum measured just under four seconds.

If you used all the initial potential energy in 10 seconds, what would the power be? 540 Watts

DC motor used as generator Motor in electric drill Generated nearly 4.volts Load motor consumed 380 milliamperes

 

Open-circuit voltage: 4 volts without load. (3.7 volts in opposite direction).

Closed-circuit current for your converter 380 milliamperes (3.68 Volts with load on line).

open circuit voltage

Efficiency = Output/Input

A farad is the charge in coulombs which a capacitor will accept for the potential across it to change 1 volt. A coulomb is 1 ampere second. Example: The voltage across a capacitor with capacitance of 47 nF will increase by 1 volt per second with a 47 nA input current.

What if we can figure out how to safely charge batteries and capacitors using electrostatic energy?

Voltas_Electroscope

Wouldn’t that be something?

Peter Terezakis

Tisch School of the Arts
http://www.terezakis.com

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Emerging Processes in Video Art: Video Haiku

Moonbeams
canyon
windows
taxis
never
sleep
.
I thought that was my haiku (here’s its video). I was wrong. Turns out what I wrote was a six-word story.

Basho’s haiku set the standard of five syllables in the first line, seven in the next, and five in the third. You gotta love the byzantine process of cultural appropriation which has brought an art form developed by a man who died in 1694, half-way across the planet, into a class in OpenFrameworks video art, Manhattan, and the 21st century.   Intellectual dissonance is inspiring.

Edo Manhattan
Across time, men stand and fall.
The same moon rises.

Peter Terezakis

Tisch School of the Arts
http://www.terezakis.com

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Basic Analog Circuits, Eric Rosenthal

I am having more fun in this class than a grown man should. What a treat to be able to go over basics in a classroom situation with a teacher as experienced, insightful, knowledgeable, passionate about teaching, and patient as Eric Rosenthal.

For tomorrow’s class I will be bringing in the soldering iron I bought with birthday money from my grandmother when I was eight (1961).  It has some road wear, has been heavily modified, but it still works and it is still red….  sort of.
Ungar Soldering Iron 1961-2013(i’m also bringing solder to class.  woo!)

Alpha Solder Spool has rust, solder still works 60/40 Tin/Lead This should last a while

Peter Terezakis

Tisch School of the Arts
http://www.terezakis.com

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Deconstruction of a shirt

I never liked that shirt. It was too bright for me. Plus if I wore it out of doors in spring or summer in San Diego it seemed to attract bees.
The Red Shirt
So it really wasn’t much of a sacrifice to use this garment for our experiment in deconstruction.
Class deconstruction
What was a bit of a surprise to me were how many pieces of fabric it took to make one simple shirt.
Red: deconstructed
There were actually more than what you can see in the image as the pocket, collar, and button-up neck area were comprised of several layers and types of fabric.
Parts

Peter Terezakis

Tisch School of the Arts
http://www.terezakis.com

War of the Currents

We need a paradigm shift and soon.

In 1896, armed with Tesla’s AC patents, George Westinghouse won the contract (against Edison and D.C.) to build the ancestor of today’s power generation facilities at Niagra Falls. (The War of the Currents)

Have a look at part of Edison’s campaign to discredit AC power:

1964 is generally the year given for the advent of the first supercomputer. If the computing power from 1964 is laughable compared to what you are working on today, why are we still using nineteenth century models for the generation and distribution of electrical energy?

Peter Terezakis
ITP, Tisch School of the Arts
New York City