Hardly any waves form when you move a thin rod back and forth in water because it mostly cuts through the water. Similarly, a string instrument’s strings have a hard time making waves in the air because it mostly cuts through it. Since wider objects can produce waves more easily, string instruments are made with a deep, wide, hollow body that vibrates, which then vibrates the surrounding air to amplify sound. Read full article here
Societal Issues
AI Predicts Crime A Week In Advance With 90 Per Cent Accuracy
An artificial intelligence model built by Ishanu Chattopadhyay and his colleagues analysed crime data in Chicago from 2014 to 2016 and managed to predict future levels of crime down to the nearest 300 metres, a week before they actually happened. While extremely useful, this artificial intelligence has been shown to expose racial prejudice in law enforcement. Hopefully, as the study’s data and methodology have been made available for others to evaluate, these prejudices can be avoided in the next iteration. Read full article here
Merv
August 15, 2022
