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Dr. Universe: How does sand stick together?

Lauren Barmore.Sand is actually made up of lots of different things. When we look at it under the microscope, we can see cooled lava, coral, seashells, and other kinds of wonderful, colorful rocks.

If you add just the right amount of water to sand, it transforms into a pretty good material for shaping towers, walls, and spires for a sandcastle. At first, I thought the wet sand stuck together because of a chemical reaction. But it turns out this interplay of sand and water creates what scientists call a physical reaction.

That’s what I found out from my friend and physicist Lauren Barmore, a graduate researcher at Washington State University who is very curious about matter and how things work on our planet.

She explained that if you had two rocks and put a bit of water in the middle, the water would be attracted to the rocks and form a kind of liquid bridge between them. One property of water is that it doesn’t like to touch the air. Water would rather hang onto something else.

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Dr. Universe

A view of space from space

WSU professor shows Hubble Space Telescope’s greatest images, details history

About 50 people tilted their heads back, gazed up at the Washington State University Planetarium dome and took in images from space Sunday at Sloan Hall on the WSU campus in Pullman.

Long before Sunday’s sunset, viewers sat in the dark room looking up at sharply-focused images of planets, stars and galaxies. One image showed a detailed shot of a purple ring at the top and bottom of Jupiter.

Guy Worthey
Guy Worthey

Guy Worthey, WSU associate professor in the Department of Physics and Astronomy, displayed the images taken from the Hubble Space Telescope.

Worthey discussed the history of the telescope, named after the late American astronomer Edwin Hubble, and how it revolutionized astronomy.

He said American physicist Lyman Spitzer developed the idea in 1946 of a telescope beyond the atmosphere rather than on the ground, as turbulence and air currents make telescope views from the ground blurry.

“If you were to go above the atmosphere, you could defeat that completely,” Worthey said.

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Moscow-Pullman Daily News

A new gravitational wave observatory in India could challenge what we know about physics

The frontier of human knowledge can be measured in collisions. With the right instruments, you can hear their echoes, from billions of years ago, many light years away.

Sukanta Bose.
Sukanta Bose

Physicists and astronomers are slowly listening to the stories inside these echoes, known as “gravitational waves,” in hopes of learning more about the birth of the universe and the nature of our reality. One of these researchers is Washington State University physics professor Sukanta Bose, who is helping to develop a new gravitational wave observatory center in India through a U.S. partnership. He is tasked with further developing the country’s scientific community by using astronomical research with the help of LIGO facilities (or Laser Interferometer Gravitational-Wave Observatory).

LIGO began as a joint project between MIT and Caltech, funded by the National Science Foundation, but has since grown into the international LIGO Science Collaboration. Its two facilities are located in Hanford, Washington, about three hours southwest of Spokane, and in Livingston Parish, Louisiana. The new project, expected to be complete in 2024, is another node in an ongoing network of gravitational wave detectors around the world.

“Unlike optical observatories, we don’t care about the quality of the night sky,” Bose tells the Inlander from India. “The sites that we choose can have cloud cover.” Instead, the detectors rely on sound, or rather, vibrations, he says.

When two major astral bodies collide, they cause ripples in the fabric of space-time, a model of our universe that combines the three dimensions of space and the one dimension of time. Albert Einstein predicted these rippling waves in his theory on general relativity in 1915, and in the last few years astronomers have been able to detect them.

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The Inlander

Shining a light on North America’s first electron microscope

In its day, a five-foot-tall golden microscope on the Washington State University campus was the most powerful imaging device on the continent. Despite its scientific significance, it has been largely lost from the pages of history.

Michael Knoblauch, biological sciences
Knoblauch

Michael Knoblauch, a biology professor at Washington State University, wants to fix this.

“Europe’s first electron microscope earned its inventors a Nobel prize and is on display at the Deutsches Museum, the world’s largest museum of science and technology, while nobody really knows about our instrument.” said Knoblauch, who is also the director of WSU’s Franceschi Microscopy and Imaging Center. “Something of this significance should be in the Smithsonian.” » More …

Laser experiment hints at weird in-between ice

Marcus Knudson
Marcus Knudson

A proposed form of ice acts like a cross between a solid and a liquid. Now, a new study strengthens the case that the weird state of matter really exists.

Hints of the special phase, called superionic ice, appeared in water ice exposed to high pressures and temperatures, researchers report February 5 in Nature Physics. Although such unusual ice isn’t found naturally on Earth, it might lurk deep inside frozen worlds like Uranus and Neptune.

“It’s definitely providing more insight into water at these conditions,” says physicist Marcus Knudson of Washington State University in Pullman.

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