Wednesday, February 17, 2010

Why does Glenn Beck hate science?

Glenn Beck recently trashed Bill Nye the Science Guy. Nye's crime? Other than being involved in science? An appearance on The Rachel Maddow Show. To make matters worse, Nye spoke truth about snowstorms and global warming. Clearly, Nye was begging to be put on Beck's Enemies List.

While Beck attempted to sell his typical twisted manipulations, Maddow wasn't buying. See for yourself.

Visit msnbc.com for breaking news, world news, and news about the economy

Tuesday, February 16, 2010

Check 2: Still no new RTQs

The 2010 RTQ release can no longer beat those of 2006, 2007, or 2008. If they drop before February 25, they can still beat 2009.

Raise your hand if you think that's going to happen.

That's what I thought.

See Check 1 for more.

Saturday, February 13, 2010

Adiabatic cooling puzzle

I'm a big fan of the PhET simulations.

But I'm puzzled by one aspect of the "Gas Properties" simulation.


If you open the simulation and squirt some gas (maybe 100 particles) into the chamber, the particles bounce around nicely. If you then compress the gas, the pressure and temperature increase as one might expect.

But reset it, squirt some gas in, and expand the chamber. The pressure drops, but the temperature remains the same. I was hoping for adiabatic cooling, but all I got was isothermal (and adiabatic!) expansion.

My thoughts? I want the temperature to drop: particles bouncing off a receding wall should recoil with reduced speed. And an expansion shouldn't be isothermal unless heat is added.

The good people at PhET assure me this is what's supposed to happen. But sometimes I'm just too thick to get it.

Educate me, experts!

Tuesday, February 02, 2010

Vaccine-autism link is dishonest and irresponsible

And so the rug is pulled out from beneath the feet of doctor-not, Jenny McCarthy.

Science wins once again. An errant claim that went out into the world failed the test of reproducibility. Sadly the errant claim, connecting vaccination with autism, collected fans. The fans are not burdened with knowledge of or adherence to the methods of science.

The fans trust a Playboy playmate's "wisdom" over the consensus of the medical community. They will, no doubt, have a continuing negative effect on health care for years to come.

See The Jenny McCarthy Body Count and Science Based Medicine for more.

Sunday, January 31, 2010

Artist generates shocking images in current work

Japanese artist Hiroshi Sugimoto uses a Van de Graaff generator to create "images of electricity." Film photographers worry about static electricity; it can scar negatives. Sugimoto shocks film on purpose! He uses a Van de Graaff generator as his static charge source.


Physics teachers derive much fun and pedagogical grooviness out of the VDG. And it is a powerful research instrument in its own right (that was Robert Van de Graaff's intention). Nice to see a visual artist bending the device to his own purposes. Sugimoto shows great potential!

Source: Wired, via Huffington Post.

Saturday, January 16, 2010

Check 1: No new RTQs

Given the recent history of RTQ updates coming later and later each year, I didn't necessarily expect to see them updated just yet. But since the RTQ selection process was unencumbered by the recently-dissolved ARP, I nourished a hope that the lack of oversight might result in a streamlined process.

For purposes of speculation, recall the RTQ update post dates over the past four years:
January 9, 2006
February 1, 2007
February 8, 2008
February 25, 2009

Should the trend continue, there's really no hope of seeing updated RTQs until March. I'll maintain my optimism for a winter release. By 2011, even that might constitute starry-eyedness.

Sunday, January 10, 2010

Coke-powered cell phone

Not another spin on the old lemon battery. But I'm unfamiliar with what's actually going on here. According to the article, "the Eco-Friendly cellphone runs on an innovative battery which makes use of enzymes to generate electricity from carbohydrates."

I'm sure I should know how that works. But I don't. Or maybe I do and I just don't know that I do. Feel free to enlighten me in the comments.

It does remind me of the clever T-shirt I saw at Chicago's Shedd Aquarium recently: "Burn Carbohydrates, Not Hydrocarbons".

Saturday, January 09, 2010

PTSOS Sacramento: Give Physics a Whirl 1/30/10

The next Physics Teacher SOS (PTSOS) Sacramento workshop will be held at Rio Americano High School on Saturday, January 30.

The focus will be heat, waves, and sound. Topics will include temperature, kinetic theory, heat transfer, phases, the Leidenfrost Effect, mechanical wave characteristics and properties, Doppler Effect, shock waves and sonic booms, interference and beats.

We will address these topics via demonstrations, computer sensors, simulations, and a make-n-take. And we'll discuss how these topics are assessed on the state's Physics CST. In any case, there will be flames!

The goodies are robust and worthwhile. Attendees will leave with treasures of knowledge and the high-quality materials needed to "work the magic" in their own classrooms on Monday (or any time thereafter).

Steve Keith will be leading the workshop with me. And our attendees bring the wisdom, insights, and curiosity that make PTSOS workshops work as well as they do.

We'd love to have all area physics teachers, new and old, along with us for a day of physics fun. If you attended the October workshop, you know the joy of PTSOS. If you missed our October session, you don't want to miss this one!

Register with Stephanie Finander: sfinander@sbcglobal.net. If you're in the San Juan Unified School District, the ERO SRN for this workshop is 1040215072.

Saturday, December 19, 2009

Richard Wiseman's holiday party tricks

They're not necessarily holiday-themed, but let's face it: the December holidays are a mishmash of many things to many people.



Happy Newtonmas!