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Further research into crackling noise was done in the late 1940s by Charles Francis Richter and Beno Gutenberg who examined earthquakes analytically. Before the invention of the well-known Richter scale, the Mercalli intensity scale was used; this is a subjective measurement of how damaging an earthquake was to property, i.e. II would be small vibrations and objects moving, while XII would be ...
Fine crackles are soft, high-pitched, and very brief. This sound can be simulated by rolling a strand of hair between one's fingers near the ears or by moistening one's thumb and index finger and separating them near the ears. Their presence usually indicates an interstitial process, such as pulmonary fibrosis or congestive heart failure.
The Sea Train is the name given to a sound recorded on March 5, 1997, on the Equatorial Pacific Ocean autonomous hydrophone array. The sound rises to a quasi-steady frequency. According to the NOAA, the origin of the sound is most likely generated by a very large iceberg grounded in the Ross Sea, near Cape Adare. [10
Bitter cold weather can make your home do strange things. Here's why your house is popping and what you can about freezing problems.
Respiratory sounds, also known as lung sounds or breath sounds, are the specific sounds generated by the movement of air through the respiratory system. [1] These may be easily audible or identified through auscultation of the respiratory system through the lung fields with a stethoscope as well as from the spectral characteristics of lung sounds. [2]
Due to film grain and possible dust on the soundtrack, optical sound could be noisy or have crackling sounds, especially when projecting worn release prints. In low-volume sections (where the noise would be especially noticeable) noise reduction was originally performed either by partly masking the track or, in variable area recording ...
Hamadryas is a genus of medium-sized, neotropical, brush-footed butterfly species commonly known as cracker butterflies.They acquired their common name due to the unusual way that males produce a "cracking" sound as part of their territorial displays.
February 10, 2025 at 12:04 AM If you’re stuck on today’s Wordle answer, we’re here to help—but beware of spoilers for Wordle 1332 ahead. Let's start with a few hints.