000 feet dulls the sensitivity of taste buds. Up to 80 per cent of taste comes via our sense of smell, which is challenged in low humidity, lessening our perception of salty and sweet, which are also affected by the approximately 85 decibels of in-cabin engine noise. Interestingly, umami...
Intensity refers to the amount of energy transmitted by the disturbance. It's proportional to the square of the amplitude.Intensityis measured in watts per square centimeter or in decibels (db). The decibel scale is defined as follows: An intensity of 10-16 watts per square centimeter equals ...
Some drums have pedals on them that make the skin tighter or looser. If the skin is tight, it vibrates more quickly when you bang the drum and produces a higher-pitched sound; if the skin is loose, the opposite happens and you get a much lower note. A similar thing happens in a lo...
The roar itself can reach an astonishing 114 decibels, almost as loud as a jet engine taking off. Lions achieve this by forcing rapid bursts of air through their voice box, with their massive chests acting as natural amplifiers. Their powerful diaphragm and abdominal muscles also play a role ...
RPM, or Rotations Per Minute, is how fast a fan spins. The higher the RPM, the more air it is likely to move; however, these high speeds often come at the cost of noise, measured in decibels (dB). A fan that spins exceptionally fast is likely to have a more powerful motor and to...
The call of a blue whale. Blue whales are not only the largest known animals on Earth, they are also the loudest. Their calls can reach 185 decibels (that's 45 more decibels than a jet airplane) and travel for hundreds of miles underwater. ...
Scream at 57 decibels – not quite as loud as yo momma, but close Have pulse width modulation (PWM) speed control – the motherboard can control the fan speed based on how hot the server gets Removing a Fan Fans like this rely on very fast rotation speeds to push a lot of air, bu...
Lynne Peskoe-Yang is a science writer and researcher in New York. Her reporting on civil engineering, machine learning, and artificial intelligence has appeared inMarketplace,IEEE Spectrum,Rewire.org, andSludge; her essays on science and language live over atPopula. ...
Not a real gun, of course. A propane-powered “bird gun”— one that sets off the equivalent of a firecracker every minute or so to scare off the birds. A really LOUD fire cracker; on the order of about 90 decibels even 100 feet away. This is equal to standing a short distance fro...
Most headphones are within the range of 85-120dB of SPL per milliwatt. To provide some context, regular city traffic is around 80dB, a shouting voice 105dB, and a jet taking off 130dB. The pain threshold for noise is thought to be around 120dB, while the Occupational Safety and Health...