March 4, 2013

March 4, 2013

## Pump Up the volume or Knock, Knock Knockin on Your skull wall!

February 18, 2013

### Just about every piece of audio equipment (microphones, loudspeakers, sound cards, amplifiers, mixers, etc) will have specifications expressed logarithmically (i.e. in dBs).

#### It is measured in INTENSITY (Air Pressure per sq m) or Power (eg. Energy carried per sec in, say, Kilowatts).

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## Deaf Metal

February 18, 2013

### Rock Concerts Cause Temporary Hearing Loss in Teens

#### Specifically, 53.6 percent of the teens said they were not hearing as well as they did before the concert, and 25 percent reported tinnitus, which is ringing in the ears.

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## Danger Zone Maths Exercise

#### For the Out door Rock Stadium (below) calculate the sound intensity (S) in dB for distance of 2, 10, 15, 20 and 100m (The last one is in the car park) if the sound intensity (S) is 120dB at 1m.

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You’ll find everything you want to know at the Physics Classroom:

November 1, 2012

November 1, 2012

November 1, 2012

November 1, 2012

November 1, 2012

May 4, 2012

## ….You get a chauffeur that’s not your mum!

### Here is an interesting statistic from Psychology Today.

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### I’m thinking around ’5′ looks like FAME, but you decide. Now count how many ex-students from your school (and any current ones) who have become famous in the last 20 years and do the maths.

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 Rictus Scale # Richter Scale Equivalent Media Coverage 1 0-3 Small articles in local papers 2 3-5 Lead story on local news; mentioned on network news 3 5-6.5 Lead story on network news; photos in nation newspapers; governor visits scene 4 6.5-7.5 Network correspondents sent to scene; president/PM visits area; commemorative T-shirts appear 5 7.5 up Covers of weekly news magazines; network specials; “instant books” appear