Engineering « TealScientific

Introduction to Maxima

By terry, on April 26th, 2013%

Maxima is a free and open source software system for manipulation of symbolic and numeric expressions, high-precision numeric computations, and plotting in two and three dimensions. Maxima is a descendant of Macsyma, the computer algebra system developed in the 1960s at MIT that inspired commercial systems, such as Maple and Mathematica. Maxima was maintained . . . → Read More: Introduction to Maxima

Well done, Grasshopper

By terry, on March 12th, 2013%

SpaceX checks off another success for its vertical takeoff and vertical landing (VTVL) vehicle, the Grasshopper. This is a demonstration of technology that enables a rocket to land intact, rather than burning up in the atmosphere on re-entry.

On 07 March 2013, SpaceX‘s Grasshopper succeeded in leaping vertically 80.1 meters (about 24 stories), hovering for . . . → Read More: Well done, Grasshopper

NASA’s Cassini – 15 Years of Exploration

By terry, on November 4th, 2012%

Launched on 15 October 1997, the Cassini mission to Saturn was an ambitious, joint project of the United States’ National Aeronautics and Space Administration (NASA), the European Space Agency (ESA), and Agenzia Spaziale Italiana (ASI) of Italy. Cassini reached Saturn in June 2004, having used “gravity assist” maneuvers around Venus, Earth, and Jupiter. Cassini carried . . . → Read More: NASA’s Cassini – 15 Years of Exploration

Celebrate Human Achievement Hour 2012 – 31 March, 8:30 p.m.

By terry, on March 31st, 2012%

Some environmentalists and celibrities ask you to turn out your lights to call attention to global warming, but this sends the wrong message. This is a rejection of technology and human achievement.

So, don’t plunge yourself into darkness … turn on those energy-efficient lights and celebrate human achievement with friends and family!

Read more at . . . → Read More: Celebrate Human Achievement Hour 2012 – 31 March, 8:30 p.m.

Ubuntu 12.04 will bring OS-level privacy options

By terry, on March 11th, 2012%

The next version of Ubuntu (12.04) will feature an easy way for users to set preferences for clearing operating system level activity logs. Read more at EFF.

At last, an affordable “green” lightbulb … um, not so much

By terry, on March 11th, 2012%

Check out this opinion piece by Michael F. Cannon posted at the Cato Institute blog, titled “You Keep Using the Word ‘Affordable.’ I Do Not Think It Means What You Think It Means.”

It was the author’s homage to the 1987 movie, The Princess Bride, that caught my attention.

SOPA and PIPA by Khan Academy

By terry, on January 22nd, 2012%

The Khan Academy provides a pretty good explanation of the SOPA and PIPA legislation.

Stop American Censorship

By terry, on January 17th, 2012%

On January 18th, TealScientific.com has joined websites across the world in standing up against the proposed blacklist bills (SOPA in the House and the PROTECT IP Act in the Senate).

Stop the Internet Blacklist Legislation!

Oppose H.R. 3699!

By terry, on January 14th, 2012%

Currently before the U.S. Congress is H.R. 3699 (a.k.a. the Research Works Act or RWA). This bill states:

No Federal agency may adopt, implement, maintain, continue, or otherwise engage in any policy, program, or other activity that (1) causes, permits, or authorizes network dissemination of any private-sector research work without the prior consent of . . . → Read More: Oppose H.R. 3699!

Skies over the VLT

By terry, on December 28th, 2011%

Here’s a beautiful, time-lapse video by Stéphane Guisard and José Francisco Salgado of the skies over the European Southern Observatory’s Very Large Telescope (VLT) in Cerro Paranal, Chile:

. . . → Read More: Skies over the VLT

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