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John Burk

The Virtuosi: Time Keeps On Slippin' - 0 views

thevirtuosi.blogspot.com/...time-keeps-on-slippin.html

Uncertainty time physics lab_ideas project_ideas

shared by John Burk on 13 Feb 12 - No Cached
  • John Burk on 13 Feb 12
     
    Great analysis of the precision of wristwatch by comparing to NIST time. 
John Burk

Under The Microscope - A movie from the time series stack described below... - 0 views

micro-scopic.tumblr.com/...e-series-stack-described-below

biology microcoscopy amoeba

shared by John Burk on 26 Apr 12 - No Cached
  • John Burk on 26 Apr 12
     
    A movie from the time series stack described below (CIL:812) shows an amoeba (Dictyostelium discoideum) trying very hard to ingest a yeast cell (Saccharomyces cerevisiae) that is slightly too large.
John Burk

Rereading Darwin » American Scientist - 0 views

www.americanscientist.org/...issue.aspx

evolution time biology

shared by John Burk on 23 Jan 12 - No Cached
  • John Burk on 23 Jan 12
     
    Interesting essay on how it is only very recently that we have begun to appreciate the giant spans of time that drive evolution and geologic events. 
John Burk

Just in time teacihng - 0 views

jittdl.physics.iupui.edu/jitt

pedagogy teaching_strategies formative_assessment

shared by John Burk on 26 Jan 12 - Cached
  • John Burk on 26 Jan 12
     
    Just in time teaching is the idea of using short formative quizzes to help the teacher better understand student thinking. 
John Burk

Magnifying the Universe - 0 views

www.numbersleuth.org/universe

scale

shared by John Burk on 18 May 12 - No Cached
  • John Burk on 18 May 12
     
    This interactive infographic from Number Sleuth accurately illustrates the scale of over 100 items within the observable universe ranging from galaxies to insects, nebulae and stars to molecules and atoms. Numerous hot points along the zoom slider allow for direct access to planets, animals, the hydrogen atom and more. As you scroll, a handy dial spins to show you your present magnification level. While other sites have tried to magnify the universe, no one else has done so with real photographs and 3D renderings. To fully capture the awe of the vastly different sizes of the Pillars of Creation, Andromeda, the sun, elephants and HIV, you really need to see images, not just illustrations of these items. Stunningly enough, the Cat's Eye Nebula is surprising similar to coated vesicles, showing that even though the nebula is more than 40,000,000,000,000,000,000,000 times larger, many things are similar in our universe.
Robert Ryshke

More time for learning and doing science - 0 views

www.timeandlearning.org/?q=node/125

Science

shared by Robert Ryshke on 17 Nov 11 - No Cached
  • Robert Ryshke on 17 Nov 11
     
    A new study in Nov. 2011 that advocates for more time for students to study science
John Burk

Swans on Tea » Popcorn Gun - 0 views

blogs.scienceforums.net/...9847

chemistry pressure gas_laws

shared by John Burk on 21 Sep 11 - No Cached
  • John Burk on 21 Sep 11
     
    This is a great video for demoing ideas about pressure and gas laws, an in particular the how boiling point increases with pressure.  Popcorn pops because the water inside flashes to steam and expands. If you put the system under sufficient pressure it won't do this … until the pressure is released, and all of the popcorn pops at the same time.
John Burk

How One College President Is Breaking Down Barriers For Women In Tech - Forbes - 0 views

www.forbes.com/...own-barriers-for-women-in-tech

shared by John Burk on 15 Dec 11 - No Cached
  • The reluctance of women to enter STEM fields seems to have deep roots — which often don’t disappear even in the face of success. One of Dr. Klawe’s favorite topics is what she calls The Imposter Syndrome. “Even women who get into MIT, and major in engineering,” she says, “often continue to second guess themselves, worrying that success was a mistake. So the first time they get a B on an exam, they switch to a major in the humanities.  Yet males can get all C’s and think they’re doing great. It’s just normal for males to overestimate their success and for women to worry that they don’t deserve to be where they are. That insecurity often haunts them into their professional lives.”
  • John Burk on 15 Dec 11
     
    A very interesting article about how Harvey Mudd has increased enrollment in computer science from 10% female to 40% female in <3yrs.  Quote is particularly interesting. 
John Burk

US NSF - Multimedia Gallery - Momentum and Time -- The Science of Speed - 0 views

www.nsf.gov/...mmg_disp.cfm

impulse-momentum physics

shared by John Burk on 03 Dec 11 - No Cached
  • John Burk on 03 Dec 11
     
    video lesson on momentum and impulse
John Burk

Science teacher: Open letter to elementary school teachers everywhere - 0 views

doyle-scienceteach.blogspot.com/...tter-to-elementary-school.html

elementary_science

shared by John Burk on 22 Jan 12 - No Cached
  • If you are going to spend time on science, though, please be wary of glib explanations that will confound a child's true understanding just a few years down the line. Language matters far more than facile explanations of the natural world. Unless you know what energy is, and I got to tell you that I do not, do not pretend a 7 year old can master this. Unless you can explain a concept accurately without using science jargon, do not pretend your lambs will get it. My students are amazed water comes out of flame, something easily demonstrated at any level of public education, yet accept that the Earth is round at face value, because you, the most powerful person in this child's life outside of family (and sadly occasionally including family), said so.
John Burk

Onset of Electrical Resistance Measured for First Time | Wired Science | Wired.com - 0 views

www.wired.com/...electrical-resistance-speed

resistance circuits voltage video physics

shared by John Burk on 21 Dec 11 - No Cached
  • Using a fast-pulsing laser, physicists have recorded the first moments of electrical resistance, the friction that generates heat as electricity travels through circuits.
  • Physicists knew electrical resistance didn’t kick in the moment a voltage was applied. Electrons experience some freedom before slowing to a crawl and scattering. What wasn’t certain was how quickly they make that transition (illustrated in the animation above, with electrons in blue, “electron holes” left by departing electrons in red, and voltage signified by the green arrow).
  • John Burk on 21 Dec 11
     
    post contains very interesting video simulation showing electrons in a semiconductor responding to the applied voltage. 
Robert Ryshke

ScienceShot: Probing a Black Hole - ScienceNOW - 0 views

news.sciencemag.org/...shot-probing-a-black-hole.html

Black Holes

shared by Robert Ryshke on 31 Dec 11 - No Cached
  • Robert Ryshke on 31 Dec 11
     
    Credit: NASA/CXC/MIT/F. Baganoff, R. Shcherbakov et al. How do you probe a supermassive black hole? Take a look at the pulsars that orbit it. These rapidly spinning neutron stars flash regular radio pulses, and in an upcoming issue of The Astrophysical Journal astronomers say that the timing of such pulses could provide a new understanding of the 4 million solar mass black hole at the center of the Milky Way.
Robert Ryshke

The Top 10 ScienceNOWs of 2011 - ScienceNOW - 1 views

news.sciencemag.org/...op-10-sciencenows-of-2011.html

Top Science Stories

shared by Robert Ryshke on 31 Dec 11 - No Cached
  • Robert Ryshke on 31 Dec 11
     
    At the end of every year, we here at ScienceNOW take a look back at some of our favorite and most popular stories of the past twelve months. Here are our top 10, including our most popular story of all time. Be sure to also check out our year in photos.
John Burk

Eric Lander - Video Library - The New York Times - 0 views

video.nytimes.com/...eric-lander.html

biology careers interviews inspiration

shared by John Burk on 04 Jan 12 - No Cached
  • John Burk on 04 Jan 12
     
    An interview with the mathematician and geneticist behind the Human Genome Project and the Broad Institute Really great video describing how lander fell in love with bio. 
John Burk

A Toy Model of the Arrow of Time : Uncertain Principles - 0 views

scienceblogs.com/...y_model_of_the_arrow_of_ti.php

entropy thermodynmaics VPython

shared by John Burk on 26 Jan 12 - No Cached
  • John Burk on 26 Jan 12
     
    great post (with code) of a statistical model of entropy. 
John Burk

Socks Before Shoes: Unraveling Cell Division - 0 views

athome.harvard.edu/sbs

cell_division biology video

shared by John Burk on 01 Feb 12 - No Cached
  • Just as you make sure your socks are on before your shoes, cells make sure that their chromosomes are properly aligned before they divide. However, every time a cell divides, it runs the risk of generating cells with too few or too many chromosomes. These mistakes can cause Down Syndrome and play a role in the growth of cancers. In his Science Center Lecture Series presentation, professor Andrew Murray looks at a mysterious cellular process that may provide clues to understanding chromosomal abnormalities such as the higher incidence of children with Down Syndrome born to older women.
  • John Burk on 01 Feb 12
     
    Great lecture on how cell division works-specifically chromosomes are aligned before the cells divide.  Video is nicely broken up into parts. 
John Burk

Embracing The Challenges Of Science Education : 13.7: Cosmos And Culture : NPR - 0 views

www.npr.org/...d-thats-something-to-celebrate

best_stuff motivation physics inspiration

shared by John Burk on 15 Feb 12 - No Cached
  • I never let my students forget that pairing of difficulty with results, because I never forget it. I let them know they are engaged in a sacred task that connects them to millennia of human effort encoded in their genes. If they can fight their way to the truth, the truth will make them free, just as it did for me that day in high school physics.
  • To engage with the world in search of any kind of Truth is an expression of the search for excellence. That, by its very nature, is desperately difficult. There will always be a price to be paid in time, sweat and tears. We should never sugarcoat that reality.
  • We want to teach students more than just how to get jobs, we also want to teach them how to live with depth and for purposes that stretch beyond their own immediate interests. We should never forget that connection. If we do, we are in danger of losing more than just the next generation of science majors.
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