Saturday, August 25, 2012

Saturday, May 5, 2012

Build a simple electric motor in 5 minutes!

http://www.youtube.com/watch?v=Ux-QGhbjOA0&feature=related
and the simplest motor of the world
http://www.wimp.com/simplestmotor/

Thursday, April 12, 2012

Estonian Engineers:

story of success: http://grabcad.com/

Sunday, March 25, 2012

Safe landing:

Due to scientists' unwillingness to toss cats off buildings for experimental observation, science has been unable systematically to study the rate at which they live after crashing to the ground.
But
Cats' remarkable ability to survive falls from great heights is a simple and predictable matter of physics, evolutionary biology, and physiology, veterinarians and biologists say.


They are relatively small in weight, which means that over a high distance, they will fall more slowly, the laws of physics dictate, thus reducing the force at which cats hit the pavement.
Cats reach terminal velocity, the speed at which the downward tug of gravity is matched by the upward push of wind resistance, at a slow speed compared to large animals like humans and horses.

Wednesday, March 14, 2012

Homework assignment TE EK (on 3.14, the Pi-Day)

Analyse one set of energy data (pie charts and bar charts). Describe the chart.
http://www.nationmaster.com/cat/ene-energy
http://www.nationmaster.com/about_us.php

Happy Pi-Day!



Larry Shaw created Pi Day in 1988. The holiday was celebrated at the San FranciscoExploratorium, where Shaw worked as a physicist, with staff and public marching around one of its circular spaces, then consuming fruit pies. The Exploratorium continues to hold Pi Day celebrations.
On Pi Day 2004, Daniel Tammet recited 2 964 decimal digits of π.
http://www.pi-world-ranking-list.com/lists/details/tammet.htm
On March 12, 2009, the U.S. House of Representatives passed a non-binding resolution (HRES 224), recognizing March 14, 2009, as National Pi Day.
For Pi Day 2010, Google presented a Google Doodle celebrating the holiday, with the word Google laid over images of circles and pi symbols.
At 9:26:53 on Pi Day 2015, the date will be 3/14/15 at 9:26:53, corresponding to 3.141592653.
http://news.bbc.co.uk/2/hi/uk_news/magazine/7296224.stm
http://en.wikipedia.org/wiki/Pi_Day
http://www.piday.org/

Monday, March 12, 2012

Wind energy.

The traditional ‘Dutch’ windmill had proliferated to the extent of about 100,000 machines throughout Europe at their peak in the late 19th centur y. These machines preceded electricity supply and were indeed wind-powered mills used for grinding grain. Use of the wind for water pumping also became common. The indmills were always attended, sometimes inhabited and largely manually controlled. They were also characterised by direct use of the mechanical energy generated on the spot. They were integrated within the community, designed for frequent replacement of cer tain components and effi ciency was of little importance.
In contrast, the function of a modern power-generating wind turbine is to generate high-quality, network frequency electricity. Each wind turbine must function as an automatically controlled independent ‘mini-power station’. It is unthinkable for a modern wind  turbine to be permanently attended, and uneconomic for it to be frequently maintained. The development of the microprocessor has played a crucial role in enabling cost-effective wind technology. A modern wind turbine is required to work unattended, with low maintenance,
continuously for in excess of 20 years.
http://www.wind-energy-the-facts.org/documents/download/Chapter1.pdf

Wednesday, February 29, 2012

Homework assignment for TE TA

http://www.youtube.com/watch?v=yoGGMdktsRM
Watch and listen and specify what the phrases were about:

Add context to the phrases:
make a groundbreaking architectural statement
1.       urban redevelopment scheme

Wednesday, February 22, 2012

Human error - what if it happens and you're an engineer?

Human errors: 

http://www.structuremag.org/article.aspx?articleID=758
1. Where does engineering education place the primary emphasis?
2. What is the main cause of most aircraft accidents?
3. Name some shortcomings of human personality and thought.
4. Name some shortcomings of human perception.
5. Name some shortcomings of human performance.
6. Why do more people not necessarily make better decisions?
7. Explain the „solve the wrong problem“ tendency.
8. What is the „Swiss Cheese Model“?
9. What do the 78% and 50% refer to? What’s your opinion?
10. What should  be done to minimize engineering error?

Human error - what if it happens and you're an engineer?

Human errors:
http://www.structuremag.org/article.aspx?articleID=758

The bridge that lasted 4 months:
Tacoma rocking-bridge: http://www.youtube.com/watch?v=3mclp9QmCGs

Thursday, February 2, 2012

Civil engineering: 18th Century lock system in West Yorkshire.

The lock as drained for maintenance: http://www.bbc.co.uk/news/uk-england-leeds-16775606

Friday, January 6, 2012

Proposals on green Information and Communication Technologies (ICT) in the forest sector

COST (Euroopa teaduse ja tehnika alane koostöö) - organisatsioon, mis on riikidevahelise teaduskoostöö vanimaid vorme Euroopas, kuulutab välja ideekonkursi. Lisaks allpool toodud koondile leiate ülevaatlikuma info ideekonkursi nõuete jm kohta kirja lisast.

Purpose of the Call
COST hereby invites researchers to submit proposals on green Information and Communication
Technologies (ICT) in the forest sector. The main aim is to collect and award innovative ideas
using Green ICT in real-life applications, especially related to current and future challenges in
the European forest sector. It will encourage intelligent use and development of ICT to increase
environmental efficiency in forests, forestry, forest industries, logistics etc.
What kind of ideas?
The call is open to all kinds of ideas related to green ICT engineering in the forest sector. We
expect most of the applicants to be scientists within engineering and forest sciences, but the call
is open to anyone. Knowledge of the state-of-the-art within engineering and forest sciences is
not a prerequisite as the expert panel will ensure the quality assessment.
Who can apply? How and by when?
Applicants should be individuals or groups of individuals. By e-mail to gec@cost.eu no later
than 31 January 2012.