akiraita

Get to know the blogger with personality tests results, or for your own reference. (take the tests and reblog with your results bolded)

MOTIV
Materialist | Offbeat | Thinking | Intimate | Vital | Conventional | Emotional | Withholding | Depressive

GLOBAL 5
social | reserved | limbic | calm | organized | unstructured | accommodating | egocentric | non-curious | inquisitive

R-DRIVE
Narcissism | Unconventionality | Empiricism | Vitality | Othercentricism | Independence | Integrity | Intellect | Stoicism | Orderliness | Hedonism | Dynamism | Activity | Romanticism

ENNEAGRAM
type 1 | type 2 | type 3 | type 4 | type 5 | type 6 | type 7 | type 8 | type 9

JUNG/MYERS-BRIGS
enfp | enfj | entp | entj | estj | esfj | estp | esfp | infp | infj | intp | intj | istj | isfj | istp | isfp

ALIGNMENT
lawful good | neutral good | chaotic good | true neutral | lawful neutral | chaotic neutral | lawful evil | neutral evil | chaotic evil

4 TEMPERAMENTS
melancholic | phlegmatic | choleric | sanguine

ROSENBERG SELF-ESTEEM SCALE
1 - 3 | 4 - 6 | 7 - 9 | 10 - 12 | 13 - 15 | 16 - 18 | 19 - 21 | 22 - 24 | 25 - 27 | 28 - 30

brazenautomaton

brazenautomaton:

booknutty:

solemn-things:

booknutty:

if we got all the cats in the world to meow at exactly the same time how loud would it be

Well the average cat meow is like 65/75dB (above speaking volume but below shouting) and there are about 2bn cats in the world, so, by that math, 130-150bn dB. Which is about 100 million jets taking off at once.

catastrophically loud 

catastrophically bad math!

you can’t just add decibels together, it’s a logarithmic scale. multiplying the intensity of the sound by a factor of 10 doesn’t multiply dB by 10, it adds +10. Multiplying it by 100 adds +20.

It’d be 251 dB, which is 100,000 fighter jets taking off at once.

You’d have enough force to sublimate the entire Earth into a gas WAY before you hit 130 billion decibels.

That being said, how many cats would you actually need to yield a sound pressure level of 130 billion decibels?

The basic equation for adding equal sound pressure levels is:

Lpt = Lps + 20 log10(n)

where:

Lpt = total sound pressure level (dB)

Lps = sound pressure level of each source (dB)

n = number of sources.

Now, we know what Lpt is: 130 billion decibels. For Lps, the original post gave a range of 65-75 dB, so let’s highball it and use 75 dB, so we can see the minimum number of cats we’d need in the best case scenario. So, we just need to solve for n, which will equal the number of cats we need:

130000000000 = 75 + 20 log10(n)

129999999925 = 20 log10(n)

6499999996.25 = log10(n)

n = 106499999996.25

Alright! So we only need… oh dear. That is quite a lot of cats. Our answer is a number with nearly six and a half billion digits, and far, far greater than the number of atoms in the observable universe, which is estimated to be somewhere in the ballpark of 1080.

So, short of some unforeseeable cataclysm beyond the understanding of modern science, I guess we will just have to live with our 251-261 dB range. Oh well.