2009 March | Talk Like A Physicist

Mar 17, 2009

Tuesday Physics Tattoo: Pi Day edition

This is a remarkable tattoo of the Basel equation and Pi.

I wanted to post this tattoo in the Pi edition to show that the magical number Pi appears at the strangest of places. One would not have expected the summation of inverse squares of integers to add up to some combination related to Pi, but here it is.

basel_equation_tattoo

This little baby is also due to Euler. In 1644 Mengoli asked if anyone could find a closed-form value (and prove it rigorously) for the infinite sum of the reciprocals of the squares. So, what is 1+1/4+1/9+1/16……. and so forth off to infinity. Contrary to intuition this series does not diverge to infinity. Although we are adding infinitely-many positive amounts together we still get a finite number. This is because the positive amounts that we are adding are getting smaller sufficiently fast. It was known that this sum was approximately 1.644. However, when Mengoli asked for a closed-form value he was looking for an EXACT expression, not a decimal approximation. In 1735 Euler found the closed-form solution. If you continue to Tattoo Number 4 part 2 you will see the sum.

Source Doctordani

More about Basel Function here.

Talking about the strangest places Pi appears, I wasn’t thinking of Pi being on PeppermintStripe’s lips. I bet she can recite 100 digits of Pi, easy! This is really cool.

pi_lip_tattoo

Source: PeppermintStrips’s Deviant Art.

Talk Like a Physicist

Mar 16, 2009

Posted by Sunny Kalara | 0 Comments

New physics inspired words : Bozone, Egoravity

bozone

Bozone: noun, The substance surrounding stupid people that stops bright ideas from penetrating.

egoravity

Egoravity: noun, the physical force identified in Newton’s (unpublished) fourth law of physics– that everything revolves around me.

From Addictionary.

Talk Like a Physicist

Mar 16, 2009

Posted by Sunny Kalara | 0 Comments

See Live Images from Mars – Mars in Google Earth

‘Live from Mars’ layer to view the latest images from NASA’s THEMIS camera on board the Mars Odyssey spacecraft, sometimes just hours after NASA receives them. You can also see live satellite orbital tracks, or check out where the HiRISE camera plans to image next.

Another interesting feature added to Google Earth is the ‘Guided Tours’ feature. If you’re not sure where to go on Mars, Google lets Bill Nye and Public Radio’s Ira Flatow, host of Science Friday show you around. You can go to the Mars Gallery layer, and double-click either of their tours for a narrated trip around the Martian surface. Google claims that this is a great way to introduce oneself to some of the most interesting spots on the planet – just sit back, and enjoy the ride. If something catches your eye, you can pause these tours at any time and explore on your own, then hit play to resume your journey.

Apart from these features, there’s a browseable layer of Google’s favorite satellite images, visible and infrared global views, geo-located excerpts from A Traveler’s Guide to Mars, and others. Google has also included 3D models of NASA rovers. Also, you can use the search box to locate famous sites like the ‘face on Mars’, just like surfing Earth.

Some of the hi-res images are absolutely stunning.

Talk Like a Physicist

Mar 15, 2009

Posted by Sunny Kalara | 3 Comments

March 14th officially becomes National Pi Day – National Physics Day can’t be far behind

Washington politicians took time from bailouts and earmark-laden spending packages on Wednesday for what might seem like an unusual act: officially designating a National Pi Day.

The U.S. House of Representatives on Wednesday approved a resolution introduced two days earlier that designates March 14, 2009 (3/14, get it?) as National Pi Day. It urges schools to take the opportunity to teach their students about Pi and “engage them about the study of mathematics.”

Zuck called them “lighthearted reminders about the importance of math and science education,” adding “this year we decided to put together an effort to see if we could use this as a mechanism to increase awareness for math and science education.”

All the arguments in favor of Pi Day also apply equally to Physics Day.

The text of the resolution is here;

Whereas the Greek letter (Pi) is the symbol for the ratio of the circumference of a circle to its diameter;

Whereas the ratio Pi is an irrational number, which will continue infinitely without repeating, and has been calculated to over one trillion digits;

Whereas Pi is a recurring constant that has been studied throughout history and is central in mathematics as well as science and engineering;

Whereas mathematics and science are a critical part of our children’s education, and children who perform better in math and science have higher graduation and college attendance rates;

Whereas aptitude in mathematics, science, and engineering is essential for a knowledge-based society;

Whereas, according to the 2007 Trends in International Mathematics and Science Study (TIMSS) survey done by the National Center for Education Statistics, American children in the 4th and 8th grade were outperformed by students in other countries including Taiwan, Singapore, Russia, England, South Korea, Latvia, and Japan;

Whereas since 1995 the United States has shown only minimal improvement in math and science test scores;

Whereas by the 8th grade, American males outperform females on the science portion of the TIMSS survey, especially in Biology, Physics, and Earth Science, and the lowest American scores in math and science are found in minority and impoverished school districts;

Whereas America needs to reinforce mathematics and science education for all students in order to better prepare our children for the future and in order to compete in a 21st Century economy;

Whereas the National Science Foundation has been driving innovation in math and science education at all levels from elementary through graduate education since its creation 59 years ago;

Whereas mathematics and science can be a fun and interesting part of a child’s education, and learning about Pi can be an engaging way to teach children about geometry and attract them to study science and mathematics; and

Whereas Pi can be approximated as 3.14, and thus March 14, 2009, is an appropriate day for `National Pi Day’: Now, therefore, be it

Resolved, That the House of Representatives–

(1) supports the designation of a `Pi Day’ and its celebration around the world;

(2) recognizes the continuing importance of National Science Foundation’s math and science education programs; and

(3) encourages schools and educators to observe the day with appropriate activities that teach students about Pi and engage them about the study of mathematics.

Attest:

Clerk.