Spiders Hear Through Hairs on their Body Fact
Although the specifics may be different for different spiders, spiders “hear” (sense vibrations) through hairs and tiny slits distributed over their body.
Sound
Sound is a mechanical wave, in simple terms, pressure displacing and vibrating molecules in a medium like air or water (which is perceived as audible sound). The other type of wave is an electromagnetic wave, which doesn’t need a medium.
Factoids tagged with "Sound"
Sound Always Travels Slower than Light Myth
Sound usually travels slower than light, but not always. Under normal conditions, light moves roughly a million times faster than sound, but under the right conditions sound can travel faster than light.
If a Tree Falls in a Forest and No One Can Hear it, it Makes a Sound Fact
According to physics, if a tree falls and no one is around to hear it, it still makes a sound. Sound is a mechanical wave of pressure and displacement through a medium such as air or water. We don’t have to perceive a sound to know the laws of physics are in play.
Brian Eno Invented Ambient Music Myth
Brian Eno didn’t invent ambient music, but he did coin the term and popularize the genre drawing from underground experimental music and the work of Erik Satie.
432 Hz is Better than 440 Hz Myth
It’s theorized that using a starting pitch of A=432 Hz and a “just intonation” tuning method (scientific tuning) is more natural and mathematically symmetric than using A=440 Hz and “equal temperament” tuning (concert tuning).
Music Can Be Understood Through Intervals Fact
Music theory and the basics of playing music (especially on the piano) can be understood through music intervals. All scales, chords, and most songs are based on intervals.
Whistle Voice is Different than Falsetto Fact
Whistle voice and falsetto are both high vocal registers that use alternative positions of the vocal cords and sound like different parts of a flute.
Blog Posts tagged with "Sound"
Mechanical Waves Versus Electromagnetic Waves
There are two types of waves: mechanical waves like sound that must travel through a medium like air, and electromagnetic waves like light that don’t.