Physics Today
Physics Today
yesterday at 20:34. Facebook
Physicists' decades-long quest to detect and identify dark matter has so far come up empty. At a recent meeting researchers pondered how to expand the search beyond the leading dark matter candidate, the weakly interacting massive particle, or WIMP. They came up with some intriguing ideas. The US Department of Energy plans to spend up to $10 million to fund a new breed of dark-matter experiment.
Physicists decadeslong quest to detect and identify dark matter has so far

Pondering a world without WIMPs

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Simon Sy Leeuw
Lee Grant Irons
David Kerlick
Physics Today
Physics Today
yesterday at 17:52. Facebook
Carl Sagan popularized the phrase: "Extraordinary claims require extraordinary evidence." That line has been evoked many times today in media coverage of a new study claiming that humans had reached the Americas 130,000 years ago, more than 100,000 years earlier than previously thought. You can read the articles and the study and judge whether sufficient extraordinary evidence exists.
Carl Sagan popularized the phrase Extraordinary claims require extraordinary evi

Scientists Really, Really, Really Doubt That People Lived In North America 130,000 Years Ago

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Nigel Connell
Kevin Armstrong
Kipras Karalius
Physics Today
Physics Today
yesterday at 14:25. Facebook
Today is the birthday of Charles Richter, the seismologist who developed the Richter scale for determining earthquake magnitude. He was born in 1900 in Ohio. Richter's decades-long collaboration with Beno Gutenberg included the development in 1935 of the Richter scale as an improvement over the more subjective Mercalli scale, which classified earthquakes by the amount of damage to buildings...
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Today is the birthday of Charles Richter the seismologist who developed the

Charles Richter

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Doodnauth Harrykissoon
Jeffery Winkler
Mehtab Azhar
Physics Today
Physics Today
yesterday at 13:28. Facebook
Today's Google doodle honors the Cassini mission, which is entering its final months studying Saturn. The probe has begun the "Grand Finale" stage, diving between the giant planet and its rings to provide unprecedented views and data. In September, after 13 years in orbit, Cassini will crash into Saturn's atmosphere to remove the threat of contaminating any of the planet's potentially...
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Todays Google doodle honors the Cassini mission which is entering its final
Ivan Faught
Sully G-m
Jose D Gutierrez
Physics Today
Physics Today
04/25/2017 at 19:22. Facebook
Artist John Edmark makes incredible sculptures that take advantage of spiral geometry. Check out these "never-ending blooms" that he spins under a strobe light.
Artist John Edmark makes incredible sculptures that take advantage of spiral geometry

Creating The Never-Ending Bloom

http://www.sciencefriday.com John Edmark's sculptures are both mesmerizing and mathematical. Using meticulously crafted platforms, patterns, and layers, Edma...

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Rolf Hawkins
Kevin Halpin
Rizwan Akbar Mugheri
Physics Today
Physics Today
04/25/2017 at 16:57. Facebook
Ingrid Ockert, a doctoral candidate in the history of science at Princeton University, offers a historical perspective on Saturday's March for Science. She describes how scientists protested fascism in the 1930s and nuclear weapons and the Red Scare following World War II. After considering the historical context, she says she's optimistic that Saturday's marches will have an impact,...
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Ingrid Ockert a doctoral candidate in the history of science at Princeton

A march through time: Historical perspective on the March for Science

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Lior Burko
Michael Hull
Jimjam Dee
Physics Today
Physics Today
04/25/2017 at 14:05. Facebook
Today is the birthday of Guglielmo Marconi, a Nobel laureate and inventor of wireless telegraphy. He was born in 1874 in Bologna, Italy. Marconi built his own wireless apparatus and conducted experiments at his father’s country estate near Bologna. Unable to interest the Italian government in his wireless telegraphy system, Marconi traveled to England in 1896, where he was granted a patent. In...
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Today is the birthday of Guglielmo Marconi a Nobel laureate and inventor

Guglielmo Marconi

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Devarajan Madhavachari
Anirban Ghosh
Dominik Koval Kowalczyk
Physics Today
Physics Today
04/25/2017 at 07:00. Facebook
The ocellated lizard develops an intricate, ever-changing pattern of black and green spots when it matures. Now researchers have determined that the patterns on the animals' backs update according to a well-defined algorithm: Over a period of a month or so, a given scale will change color—from green to black or black to green—with a probability that depends on the colors of the scales around...
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The ocellated lizard develops an intricate everchanging pattern of black and green

The ocellated lizard is a computer game come to life

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Guy Maturo
Ben Moss
Kyle Davis
Physics Today
Physics Today
04/24/2017 at 21:20. Facebook
Here is our full report on the March for Science, which was held in Washington DC and in more than 600 other locations worldwide.
Here is our full report on the March for Science which was

Scientists march on Washington and cities worldwide

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Kevin Balch
David Rose
Michael Hackman
Physics Today
Physics Today
04/24/2017 at 20:27. Facebook
Physicists have noticed something strange in proton collisions at the Large Hadron Collider–specifically, an unexpectedly high number of particles made of strange quarks. Such particles are routinely produced in collisions of heavy ions, which researchers use to simulate the hot, dense state of matter known as quark-gluon plasma that existed just after the Big Bang. The new finding, reported...
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Physicists have noticed something strange in proton collisions at the Large Hadron

New ALICE experiment results show novel phenomena in proton collisions

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Rafael Tolibas
Blair Garner
Jimmy Wells
Physics Today
Physics Today
04/24/2017 at 18:27. Facebook
"Our dream," writes theoretical physicist Fernando Pastawski, is "to understand space, time and gravity as emergent features in a world made of information – quantum information." Pastawski uses knitting and crocheting as an analogy to demonstrate what exactly that means.
Our dream writes theoretical physicist Fernando Pastawski is to understand space time

The entangled fabric of space

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Doodnauth Harrykissoon
Liaquat Ali
Curtis Saxton
Physics Today
Physics Today
04/24/2017 at 15:01. Facebook
On this day in 1990, NASA's space shuttle Discovery took off from Kennedy Space Center to carry the Hubble Space Telescope into orbit. The launch was originally planned for October 1986 but the Challenger disaster of January that year grounded the shuttle fleet for two years. Besides launching the telescope, shuttles also carried out four serving missions. The first, in December 1993,...
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On this day in 1990 NASAs space shuttle Discovery took off from
Doodnauth Harrykissoon
James Pate Williams Jr
Neil Palosaari
Physics Today
Physics Today
04/22/2017 at 17:20. Facebook
Some creative signs at the rainy Washington DC March for Science.
Some creative signs at the rainy Washington DC March for Science
Mary Rose Devine
Stefan Philipp
Damien Dodds
Physics Today
Physics Today
04/21/2017 at 21:07. Facebook
A major study on scientific integrity in the US advocates stricter policies for scientific authorship attribution, increased openness in scientific work, the reporting of negative findings, and establishment of an independent, nonprofit Research Integrity Advisory Board. Misconduct and other suspect practices can cost up to hundreds of millions of dollars per year.
A major study on scientific integrity in the US advocates stricter policies

National Academies release sweeping review of research misconduct

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David Kerlick
Curtis Spivey
Ebot Hernandez
Physics Today
Physics Today
04/21/2017 at 19:02. Facebook
Look closely and not every periodic table of the elements is the same. One area of disagreement among chemists concerns the elements of group 3. In addition to scandium (Sc) and yttrium (Y), some tables periodic tables list lanthanum (La) and actinium (Ac). Others list lutetium (Lu) and lawrencium (Lr). It's not clear which is right. Chemistry World has a nice summary of the debate.
Look closely and not every periodic table of the elements is the

The group 3 dilemma

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Sibusiso Manzini
Alberto Paredes
Joshua C Danley
Physics Today
Physics Today
04/21/2017 at 16:45. Facebook
Photo of the day: Earth between the rings. NASA's Cassini spacecraft captured this photo of Earth (the bright dot near center) on 12 April as it peered through a gap in Saturn's icy rings. If you look really hard you can see the Moon as a very faint dot to the left of Earth. The photo is reminiscent of the Pale Blue Dot image from the Voyager 1 spacecraft that captivated the world in 1990....
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Photo of the day Earth between the rings NASAs Cassini spacecraft captured
Anup KC
Sylvio N. Heres
Mill Miller
Physics Today
Physics Today
04/21/2017 at 14:20. Facebook
Tomorrow is the March for Science. Scientists and science enthusiasts will rally in Washington DC and across the world in what supporters are calling a political but nonpartisan event. The march has drawn excitement but also criticism. Today we've posted an overview of the march. Physics Today staff will be at the DC march tomorrow; check here for updates. We'll have a full report early next week.
Tomorrow is the March for Science Scientists and science enthusiasts will rally

What to expect at the March for Science

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John Cooper Ray
Kurt Mathews
Melissa G Arredondo
Physics Today
Physics Today
04/21/2017 at 13:18. Facebook
Today is the birthday of physicist, mathematician, and astronomer Jean-Baptiste Biot, who was born in Paris in 1774. Biot had a short-lived stint in the French army due to an illness following the Battle of Hondschoote. He returned home and studied math at the École Polytechnique. By 1797 he was a college professor; he spent most of his tenure at the Collège de France. In 1803 Biot was sent to...
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Today is the birthday of physicist mathematician and astronomer JeanBaptiste Biot who
David Samson
John Hedlund
Abdul Matin Kagadi
Physics Today
Physics Today
04/20/2017 at 21:08. Facebook
Laura Kasian is a PhD physicist who also holds a law degree. Yet she works in the movie business. Kasian is a production services technician lead at Sony ImageWorks in Vancouver, Canada. She helps manage the enormous amounts of data from visual artists to help assemble the final edited film. Her credits include Suicide Squad, Ghostbusters, and Cloudy with a Chance of Meatballs. Check out this...
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Laura Kasian is a PhD physicist who also holds a law degree

Q&A: The law-trained physicist turned movie technician

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Wm Pussetto
Jonathan J Kim
Moses Epilo
Physics Today
Physics Today
04/20/2017 at 19:46. Facebook
Novelist Cormac McCarthy has a new piece out, and it's very different from his usual fare. For Nautilus he's written a nonfiction article about the nature of the conscious and unconscious mind. He's been thinking about the topic with colleagues at the interdisciplinary Santa Fe Institute in New Mexico.
Novelist Cormac McCarthy has a new piece out and its very different

The Kekulé Problem - Issue 47: Consciousness - Nautilus

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Jack Metzler
Sean Mossman
Philip J Thibodeau