Coolmath Algebra
Exponentials & Logarithms Lesson 13 -
More Ways to Use This Stuff (Radioactive Decay and Decibel
Levels) (page 4 of 5)
---- This algebra lesson introduces radioactive
decay and decibel levels and explains how to use their
formulas |
|
|
|
|
|
DECIBEL
LEVELS:
Here's a
chart of some cool decibel levels:
| |
160 |
|
| Jet
engine - close up |
|
|
| |
150 |
Snare drums played
hard at 6 inches away
Trumpet peaks at 5 inches away |
| |
140 |
Rock singer screaming
in microphone (lips on mic) |
|
Threshold of pain |
|
|
| |
130 |
|
|
Pneumatic (jack) hammer |
|
Cymbal crash |
| Planes
on airport runway |
120 |
|
| |
|
Fender guitar
amplifier, full volume 10 inches away |
| Power
tools |
110 |
|
| Subway
(not the sandwich shop) |
100 |
|
| |
90 |
|
| Heavy
truck traffic |
|
|
| |
80 |
Typical home stereo
listening level
Acoustic guitar, played with finger at 1 foot away |
| Average
factory |
|
|
| |
70 |
|
| Busy
street |
|
Small orchestra |
| |
60 |
Conversational speech
at 1 foot away |
| Average
office noise |
50 |
|
| Quiet
conversation |
40 |
|
| Quiet
office |
30 |
|
| Quiet
living room |
20 |
|
| |
10 |
Quiet recording
studio |
| |
0 |
Threshold of hearing
for healthy youths |
Continued on the
next
page
|
The printing
and distribution and/or downloading of these lessons is strictly
prohibited. |
|
|
|
|
|
|
|
|
