Articles tagged with "frequency"

Binaural Beats

3 July 2023

About 10 years ago a friend asked me about binaural beats. I had to admit at the time that I was oblivious, and had never heard of them. He proceeded to describe a fun audio effect, one that only works through a pair of headphones. If you play an audio tone (frequency) in each ear, and make the tone in each ear a little different, the difference between the frequencies of these two tones - their interference pattern - can be heard as a third audio tone that sounds like it's originating from somewhere between your ears. So, if you play a 550Hz tone in your left ear, and a 500Hz tone in your right ear, you will also “hear” a 50Hz tone between your ears: 550 - 500 = 50.

Sun protection pill goes on sale in NZ

8 October 2017

NZ now has its second ingested product for sun protection being sold. The first hit the market a few years ago, and is from a company called Osmosis Skincare. Their product contains "harmonised" water, which is described as:

Finally, a skeptical story about Lotto

6 August 2017

There was a nice story about the 30th anniversary of the Lotto this week from Stuff. The article talked about how the fact some numbers come up more often than others is likely chance (Lotto take this seriously, and apparently regularly wash and weigh the balls to ensure there's no bias). The difference in frequency between the most drawn ball, number 1 (16.91%) and the least drawn ball number 34 (13.97%) is not huge, and I suspect the number frequency draws a bell curve.