Tuesday, November 17, 2015

Fun with WolframAlpha

Do you ever just go to http://www.wolframalpha.com/ and hit the random button? My first 5 results are below. Note I only selected a small part of each output that I thought was particularly interesting.

1) Query: absorption coefficient of sound moist air at 30C and 20% and 6000ft
Output:: http://www.wolframalpha.com/input/?i=absorption+coefficient+of+sound+moist+air+at+30C+and+20%25+and+6000ft&random=true

5000 Hz:
absorption coefficient | 68.87 dB spl/km (decibels sound pressure level per kilometer) | = 110.8 dB spl/mi (decibels sound pressure level per mile) (from ISO 9613-1: 1993 Acoustics-Attenuation of sound during propagation outdoors)

10,000 Hz:
absorption coefficient | 240.6 dB spl/km (decibels sound pressure level per kilometer) | = 387.3 dB spl/mi (decibels sound pressure level per mile) (from ISO 9613-1: 1993 Acoustics-Attenuation of sound during propagation outdoors) sound during propagation outdoors)
2) Query: C, Eb
Output: http://www.wolframalpha.com/input/?i=C%2C+Eb&random=true





3) Query: probability of winning at craps
Output: http://www.wolframalpha.com/input/?i=probability+of+winning+at+craps&random=true
0.4929 ~~ 1 in 2

come-out roll | result | probability | probability of winning
2 | craps  (loss) | 1/36 | 0
3 | craps  (loss) | 1/18 | 0
4 | set point to 4 | 1/12 | 1/3
5 | set point to 5 | 1/9 | 2/5
6 | set point to 6 | 5/36 | 5/11
4) Query: 10 megaton nuclear explosion
Output: http://www.wolframalpha.com/input/?i=10+megaton+nuclear+explosion&random=true

nuclear explosion |  
yield | 10 megatons of TNT

height of cloud top | 18 miles
height of cloud bottom | 12 miles
radius of cloud | 23 miles
fireball duration | 13 seconds
air blast radius (near-total fatalities) | 3.6 miles
ionizing radiation radius (500 rem) | 3 miles
air blast radius (widespread destruction) | 9.6 miles
(assuming optimum burst height;
 fireball duration is based on 10% of peak emission intensity)
5) Query: range of e^(-x^2)
Output:  http://www.wolframalpha.com/input/?i=range+of+e^%28-x^2%29&random=true







So that's WolframAlpha. It is really fun to play with and I highly recommend playing with it. It even let's you do silly things like look up the parametric equation for a taco curve. My only problem with the site is that it constantly bugs you to get a pro membership. Without one you do not have access to a lot of features but the functionality that is accessible for free is still really fun.

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