Science is Fun Fridays!

 


Cymatics is the science of visible sound, discovered by Robert Hooke in 1680.  The term wasn't coined until 1967 though, by Hans Jenny in his book Cymatics: The Study of Wave Phenomena.

But it is Ernst Chladni who is credited as the father of acoustics.  He invented the technique to study the motions of vibrating plates in 1787.  Starting with a metal plate, you sprinkle some sand, and then strike a violin bow.  This would produce characteristic patterns, and Chladni was able to produce a formula that successfully predicted the patterns found on the plate.



Experiments now include other means of tone making.


Chladni's patterns have long been used by violin makers to test the resonance.



Comments

Post a Comment

Popular posts from this blog

Science is Fun Fridays!

Image
  Science is also serious. You may have heard that a case review is ongoing regarding the safety and science of an abortion pill, called mifepristone, that has been on the market since 2000. It's another attack from antiabortionists who want to restrict others from care and choice for themselves. Of course, the FDA already vetted the drug and numerous studies show the pill is safe and effective. "If courts can go against a whole tremendous amount of scientific evidence, that just doesn't seem right." More Info: Science News News and Politics
Read more

Vacation Open Thread

Image
 Off we go! To the left - we're heading towards Utah and then down to Bryce Canyon. I'll pop in when I can so please share whatever you'd like throughout the week - music, news, some crazy fashion, or just a cool photo.  😊 I'll be back on the 23rd!
Read more

Science is Fun Fridays!

Image
  Othram is a company providing forensics technology for cold case work. "Justice is not a luxury; it is a basic human right." In 1997, rock climbers in rural Washoe County found human remains buried under stones in a shallow grave.  While cause of death could not be determined, it was ruled a homicide. Investigators entered her information, including a forensic facial reconstruction, into the National Missing and Unidentified Persons System but no leads yielded a match. Earlier this week, with Othram's help, Washoe County was able to identify Lorena Gayle Mosley, who was 41 at the time of her death.   Scientists were able to develop a DNA extract to be used in genome sequencing, building a comprehensive profile for the victim.  Their in-house genetic genealogy team was then able to develop investigative leads that were returned to Washoe County. In follow-up investigation, the Medical Examiner's Office Medicolegal Death Investigator/Technician Supervisor Sarah Turne
Read more