Videos tagged physics
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PY105 pre-class video for session 3 - velocity and speed
This video deals with the topics of velocity and speed. It includes a discussion of average speed compared to average velocity; how to find instantaneous values of velocity and speed; and how velocity, speed, and displacement can be found from [...]different graphs.
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Pile driver (can crusher) as polarizer
Everyone knows that a pile driver is good for crashing cans. Val Voroshilov shows that it also is a good device to polarize waves! Video captured by Richard Laskey.
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BU's X-Ray Telescope Has Landed on the Moon!
On Sunday, March 2, at 2:30 am, a team of researchers gathered in a lab in Boston University’s College of Engineering. It was a moment they had anticipated for years: a BU-developed telescope, called the Lunar Environment heliospheric X-ray Imager [...](LEXI), was moments from touching down on the surface of the moon. The telescope is attached to NASA’s Blue Ghost Mission 1 spacecraft, which blasted off from Florida on January 15.
As the lunar lander got closer and closer to the surface, lead LEXI scientist Brian Walsh, an ENG associate professor of mechanical engineering, read the craft’s elevation above the moon surface aloud to the room of a dozen team members. NASA’s live broadcast of the landing was on a screen in the background. When the elevation reached zero, the room quieted.
Then, a voice from Blue Ghost’s central communications team announced that the spacecraft had successfully landed on the moon. Walsh and the whole team clapped and cheered.
“The team is thrilled to reach this milestone,” says Walsh (GRS’09,’12).
After a quick celebration, they were back to business.
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BU's LEXI Telescope Lands on the Moon! | Student Explains Mission
Boston University’s LEXI telescope has landed on the moon and is already capturing groundbreaking data! Hear from BU student Natalie Lett (COM’27) about this groundbreaking mission and the research it will advance. This project is in [...]collaboration with Johns Hopkins and NASA Goddard.
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This Astrophysics Student Studied 20,000 White Dwarf Stars
For a lot of people, the unknown is a scary prospect—but not for Boston University astrophysics student Ariyana Bonab (CAS’25). She’s long been curious about space and the universe’s biggest mysteries—what’s inside a black hole, what [...]happens when stars die—and known she wanted to study astrophysics since she was a kid.
Now, she studies white dwarf stars in a research group led by JJ Hermes, a BU College of Arts & Sciences assistant professor of astronomy. White dwarf stars are the leftover cores of dying stars. In her project, funded by the Undergraduate Research Opportunities Program, Bonab has looked at over 54,000 images of white dwarfs, and is trying to determine the composition of each one.
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LEXI is Going to the Moon! (In 2023)
Boston University’s LEXI telescope is going to the moon! (But not until 2023.) Part NASA’s Commercial Lunar Payload Services (CLPS) initiative, LEXI (the Lunar Environment Heliospheric X-ray Imager) will hitch a ride on Firefly [...]Aerospace’s Blue Ghost lunar lander, alongside nine other science and technology payloads. Once there, LEXI will take one-of-a-kind images of the Earth’s magnetic fields and how they interact with the solar wind, providing critical insights into the plasma environment surrounding our planet.
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What Is A Leap Year, Anyway?
Ever wonder why we have Leap Year—which adds a day to our February calendars—every four years? In this video, JJ Hermes, a CAS assistant professor of astronomy, explains the science behind Leap Year.
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Behind the Scenes at BU: Scientific Instrument Facility
In our new series “Behind the Scenes at BU,†we take you to places across campus you might not know exist. First up, a remarkable space hidden behind an unremarkable door in a basement on Cummington Mall. We’re talking about [...]BU’s Scientific Instrument Facility, which produces experimental, cutting-edge hardware to support Boston’s vibrant research community. Founded in 1987, SIF produces cutting-edge, experimental hardware for use in scientific experiments being conducted by researchers here in Boston and across the globe. The shop’s highly skilled technicians build the tools that make discovery possible, from desktop vacuum chambers for use in labs here on campus to components for major research projects like the Dark Energy Spectroscopic Instrument (DESI) at the Kitt Peak National Observatory in Arizona and at the ATLAS experiment at CERN, the European atomic physics laboratory in Geneva, Switzerland.
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Friendly Feuds: Experimental Physicists vs. Theoretical Physicists
Among the great scientific feuds of our time is the rivalry between experimental physicists and theoretical physicists. In this video, two Boston University physicists—experimentalist Alex Sushkov and theorist Liam Fitzpatrick—duke it [...]out (verbally, of course) for scientific supremacy.
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