Solar Ultrasound - Bass Note In Music Of The Spheres

Ancient cosmology held that each of the planetary spheres corresponded to a different note in a universal musical scale. The tones emitted by the planets depended on the ratios of their different orbits in the same way that the length of a lyre-string determines its tone. The music of the spheres was contemplated by many respected philosophers, like Pythagoras, Plato, Pliny and Ptolemy. The English hermetic philospher Robert Fludd devised celestial scales that spanned three octaves, linking sub-planetary elemental worlds to angelic choruses beyond the stars.


(Robert Fludd's divine Monochord)

Now, in a letter published on December 10th in Astrophysical Journal Letters, researchers report that the Sun's atmosphere is filled with ultrasound-like waves at a frequency of about 100 millihertz - every ten seconds. "At 10-second period, these waves qualify as ultrasound because individual atoms on the Sun experience only a few collisions during the brief passage of each wave, just as with ultrasound here on Earth," says Dr. Craig DeForest, a senior research scientist in the SwRI Space Science and Engineering Division. DeForest found the signature in data collected in January 2003 in the TRACE program.

"These ripples seem to be carrying about 1 kilowatt of power per square meter on the surface of the Sun," says DeForest. "That is similar to the sonic energy you might find coming out of the speakers at a rock concert. Very loud."

Of course, sound cannot travel through the vacuum of interplanetary space. The TRACE spacecraft, in orbit around the Earth, is an ultraviolet telescope trained on the sun. TRACE data shows small fluctuations in the brightness of solar ultraviolet emissions. Solar ultrasound waves are too faint to be seen directly by TRACE. So, DeForest looked for patterns in the background noise of the telescope.


(From Solar Atmosphere)
This combined ultraviolet solar image shows the region of the solar atmosphere that was examined to find the waves. The full-Sun image was produced with the EIT telescope aboard the SOHO spacecraft (image courtesy of the SOHO EIT consortium), and the small inset shows the region that was examined with higher resolution by the TRACE telescope.

TRACE is the Transition Region and Coronal Explorer mission; it has an open data policy. TRACE data is available to anyone on the web. The intent of the program is to explore the magnetic field in the solar atmosphere; TRACE was launched in 1998 and uses a 30 centimeter apterture telescope with a 1024x1024 CCD collecting images over an 8.5 arc minute square field of view.

The waves or "ripples" are most likely created by the sudden collapse of magnetically induced electric currents (magnetic reconnection) or by lower frequency sound waves that crash like ocean waves as they make their way up from the surface of the Sun. Both of the sources are likely candidates for the source of the solar atmosphere's mysterious extra heat, making the new waves a valuable tool for exploring a decades-old mystery. "By examining these waves more closely, we should be able to discern the source of energy release in the solar atmosphere, just like you can tell by listening whether the car is running in a dark garage," says DeForest. "In both cases, something is releasing energy into the environment, and that release has a recognizable sonic signature."


(From Solar Ultrasound)
In this wave diagram, which summarizes nearly 1,000 TRACE images, the waves appear as sloped ridges, showing the presence of sound-like waves in the octave between 50 and 100 mHz. The waves travel about 1,000 times the speed of sound on Earth.

As far as I know, science fiction authors have never used a solar-sized mass as a musical instrument. However, sf is replete with other creative examples of instruments; see Isaac Asimov's visisonor or Jack Vance's stimic. Read more about TRACE, the music of the spheres and solar ultrasound.

Scroll down for more stories in the same category. (Story submitted 12/12/2004)

Follow this kind of news @Technovelgy.

| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 5 )

Related News Stories - (" Space Tech ")

Revisiting A Cloud City On Venus
I've been looking forward to something like this since 1980.

'Windowless Cockpit' Like Star Trek's Patent Applied For
Wait - you thought Sulu had a window?

NASA's Warp Speed Starship Design
'As Earth's faster-than-light spaceship hung in the void between galaxies...'- John W. Campbell

ForceShoes, NASA's Exercise Sandals For Astronauts
'Joe got out the gravity-simulator harnesses.'- Murray Leinster, 1953.

 

Google
  Web TechNovelgy.com   

Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.

 

 

 

 

 

Current News

LG's 18 Inch Flexible OLED Panel Is Awesomely Cool
'...a wide sheet of clear material suddenly flared with light and swirling color.'

Tiniest Microphone Inspired By Fly
'Transmitting to its manipulator, far away now, all that it heard through its ear microphones...'

NASA's Highway In The Sky For Drones
Traffic is everywhere.

Palcohol Powdered Alcohol - Try Or Ban?
'I had a small can of powdered alcohol disguised as tooth powder...'

pd.id Personal Drink ID Device Like Dune 'Poison Snooper'
'The jeweled hands clutching drinks (and the unobtrusive inspections with tiny remote-cast snoopers)...'

Monsieur Bartending Robot
'He poured the liquids into his maw...'

Cities Detect Gunfire Acoustics With ShotSpotter
'Sound trackers on the roof...'

Cruise Automation's 'Highway Autopilot' For $10K
'It cut her out of the stream of vehicles and reduced the speed of her car...'

Pengheng Space Capsule Hotel Staffed Entirely By Robots
'A planet-wide chain of hotels that specialized in non-human service.'

Electric Bacteria That Live On Pure Energy
'April 5, 1977; that was the night the waveries came.'

EXACTO Smart Bullet From DARPA
Nicely visualized in what 1984 movie?

Neural Implant To Treat Memory Loss
'You've got remote storage. How regular is the update?'

MIT's Shape-Shifting Robot Materials
The T-100, an advanced prototype, is made of liquid metal. Not quite ready.

LS3 AlphaDog Robot Marine Corps Video
'He admired the fast-plodding, articulated legs, so necessary since roads had degenerated...'

Vantablack Is Blacker Than Your Black
'Well, we have a black coating now thatís ninety-nine percent absorptive...'

Remotely Operated Gardening Rover - Student's Space Agricultural Robot
'There were things growing all over the place, not just in some domed enclosures blasted some millions of miles out in to space.'

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.