Loudest sound in recorded history...

I've heard about this volcano, I believe they estimated it about 363 db or about 3 psi at the source something like that don't remember. But what's for sure the scientists also said that the volcano had some kind of flaming chrome and huge magnets on it, any explainations?

 
According to http://www.wikipedia.com the loudest sound in recorded history was the eruption of Krakatoa in 1883.
The following is taken from the text.

"The explosions were so violent that they were heard 2,200 miles (3,500 km) away in Australia and the island of Rodrigues, near Mauritius, 4,800 km away; the sound of Krakatoa's destruction is believed to be the loudest sound in recorded history, reaching levels of 180 dBSPL 100 miles (160 km) away."

Source: http://en.wikipedia.org/wiki/Krakatoa

I wonder how they measured it.

Do you guys think that my Alpine Type E could get that loud if I had the right setup and amp??? //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

well i got ya beat i got a pair of type e 12's

//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 
Actually I found this really interesting website, they say they even work with RE to make their drivers more efficient.

Anyway here's the link:

http://www.makeitlouder.com/Decibel%20Level%20Chart.txt

Here's a small quote from the website: //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

180 (P) = MOTOR DRIVE COUPLED MANOMETER STATIC PRESSURE, 165 DB(P) UP TO 50 HERTZ, -REF.14.

182 (P) 1 TON T.N.T AT 150 FEET, EXACTLY 182.2 DB -REF.4.

183 (P) = 6 P.S.I. TOTAL DESTRUCTION OF ALL STRUCTURES, PARTICLE VELOCITY

(BLAST WIND) IS 180 MILES PER HOUR. 0.9 MILES FROM HIROSHIMA ATOMIC BOMB

AND 3.3 MILES FROM 1MEGATON NUCLEAR BOMB, LESS 0.1 % OBJECT SURVIVAL -REF.2.

185.75 (NP) 0.375 POUNDS OF T.N.T. RIECHTER -1.5

186.1(P) 1 POUND T.N.T AT DISTANCE OF 10 FEET -REF.4.

187 (P) 1 TON T.N.T. AT 100 FEET, EXACTLY 186.8 DB -REF.4.

190.60 (NP) RIECHTER SCALE 0 (ZERO) EARTHQUAKE

190.60 (NP) 2.0000 POUNDS T.N.T.

191 (N)BOMB-VERY SMALL 1 LB. OR GRENADE, VERY CLOSE PRESSURE MAY EXCEED 210 db (P)

193.806(P) = 1 KILOGRAM PER SQUARE CENTIMETER

193.979(P) = 1 BAR PRESSURE = 14.504 POUNDS PER SQUARE INCH = 14.504 P.S.I.

194.09(P) = 1 (ONE) AIR ATMOSPHERE = 14.6962 POUNDS PER SQUARE INCH = 14.6962 P.S.I.= 1 ATM

SOUND WAVES DISTORT AND ARE NOW DEFINED AS SHOCK WAVES AND THEY BEGIN TO FOLLOW SHOCK WAVE BEHAVIOR. PARTICLE VELOCITY (BLAST WIND) = 590 FEET / SECOND = 180 METERS PER SECOND = 402 MILES PER HOUR. -REF.2.

194.1(P)EXACTLY, 1 POUND T.N.T. AT 6 FEET -REF.4.

195-190 (P) HUMAN EARDRUMS RUPTURE 50 % OF TIME -REF.2.

195.2(P) 1 TON T.N.T. AT 60 FEET -REF.4.

200.59 (NP) 63.24 POUNDS OF T.N.T., RIECHTER SCALE 1

202-198 (P) HUMAN DEATH FROM SOUND (SHOCK) WAVE ALONE. DEATH FROM: SCHRAPNEL AT ANY LEVEL ABOVE 165 DB IS LIKELY AND BEING THROWN (10 FEET PER SECOND) ABOVE 180 DB -REF.2.

205.29(NP) 320 POUNDS OF T.N.T. RIECHTER 1.5

207 (N)BOMB, SMALL SIZED 250 POUNDS, 14 FOOT WIDE CRATER, NEARBY MAY EXCEED 238 db (P) -REF.2.

207.46 (P) = 68.48 P.S.I.= (Q), CRITICAL PRESSURE, THE SHOCK WAVE PRESSURE(P) AND DYNAMIC (BLAST WIND) PRESSURE(Q) ARE EQUAL, LOUDER THAN THIS DYNAMIC PRESSURE(Q) WILL ALWAYS BE MORE THAN SHOCK PRESSURE(P). BLAST WIND (PARTICLE VELOCITY = U) IS 1697 FEET PER SECOND = 518 METERS SECOND = 1157 MILES PER HOUR. 400 FEET FROM A 1000 TON T.N.T EXPLOSION -REF.2.

209 (N)BOMB, MEDIUM 500 POUNDS, 18 FOOT WIDE CRATER NEARBY MAY EXCEED 240 db (P) -REF.2.4.

210 N.A.S.A. 400,000 ACOUSTIC WATTS EXPIERIMENTAL NOISEMAKER 48 FEET ACROSS OF CONCRETE AND STEEL

210.6 (NP) EARTHQUAKE REICHTER SCALE 2.0

210.6 (NP) 1 TON OF T.N.T. and a 23.40 foot crater

212 (N) SONIC BOOM AVERAGE FROM JET -REF.5.

213 (N) SONIC BOOM GENERATES APPROXIMATELY 1.2 GIGAWATTS OR 1.6 MILLION HORSEPOWER -REF.1.2002

213 (N) BOMB 1 TON TNT, 23 FOOT WIDE CRATER OR 175.8 db (P) AT 250 FEET. 213.44 EXACT -REF.1.2.4.

214.09(P) = 10 atmospheres, DB(Q) BLAST WIND = 217.439 DB(Q)

215 SPACE SHUTTLE LAUNCH EXHAUST, APPROXIMATELY 3 MILES PER SECOND

215 (N)THUNDER, THE LARGEST POSITIVE GIANTS. ORDINARY THUNDER 165-180 DB.LIGHTNING STRIKE

ON OCEAN SURFACE 234db (P) AT 2exp-5 NEWTONS PER SQUARE METER

215 (N) BATTLESHIP NEW JERSEY FIRING ALL 9 SIXTEEN INCH GUNS

216 (P) INSIDE A NORMAL CAR ENGINE CYLINDER WITH A 9 TO 1 COMPRESSION RATIO

216.0 (NP)+-0.3 DB 6.5 TONS OF T.N.T. EXACT EXTREMELY ACCURATE HIGH TECH MEASUREMENTS -REF. 8

217.439(Q) = DYNAMIC PRESSURE BLAST WIND FROM A 10 ATMOSPHERE OVERPRESSURE

218.2(NP)sonic boom F-16. at 100 feet high = 3.92 lbs.per square foot = 139.6db, +78.6db = 8536.5 meters high -REF.1.10. 2002

220 ?(N)BOMB, LARGEST USED IN WWII, WIEGHING 11 TONS AND 25 FEET LONG -REF.1.3. 2001

220 (N)SATURN 5 ROCKETSHIP, MELTS CONCRETE AND BURNS GRASS ONE MILE AWAY

REACHED A VELOCITY OF 5 MILES PER SECOND AND MOON ON JULY 20, 1969

220 ?(N)SPACE SHUTTLE LANDING SONIC BOOM WITH VELOCITY OF MACH 20 -REF.1. 1998

225 (P) INSIDE A NORMAL DIESEL MOTOR SEMI-TRUCK CYLINDER 25 TO 1 COMPRESSION

226.59 (NP) TRAIN EXPLOSION 2004 FEB 19 09:37AM NEYSHABUR, IRAN, runaway train, possible terrorism, shattered windows at 15 km.,crater is 500 feet diameter and 50 feet deep, magnitude 3.6 riechter, at several miles "the entire area shook", heard at 75 km, equal to 251.195 tons of t.n.t., 51 car train = 17 cars sulpher, 6 cars gasoline, 7 cars ammonium nitrate fertilizer (a.n.f.o.), 10 cars cotton wool, 3 left at station not involved, 8 miscellaneous loads

228.1 (P)EXACTLY. 1 POUND OF T.N.T. AT A DISTANCE OF 1 FOOT -REF.4.

229 (N) SEAFLOOR VOLCANIC ERUPTION, REFERENCE 2 EXP-5 NEWTONS PER SQUARE METER

230.59 (NP) EARTHQUAKE RIECHTER 4.0

230.59 (NP) 1000 TONS OF T.N.T.

232 (N)LARGE NON-NUCLEAR EXPLOSION, 500 TONS, 1917 DESTRUCTION OF GERMAN

WWI TUNNELS IN MESSINES RIDGE BELGIUM, HEARD OR FELT IN LONDON (N) -REF.1.,-REF.3.

234.09(P) = 100 ATMOSPHERES, BLAST WIND = 241.46 DB(Q)

235 (P) 1 TON T.N.T. AT 10 FEET, EXACTLY 235.3 DB -REF.4.

? (N)TORNADO AVERAGE, 5100 TONS OF T.N.T. -REF.1. 2004

235.19 (NP) EARTHQUAKE RIECHTER 5.0

235.19 (NP) 31624 TONS OF T.N.T.

240 (N)ONE KILOTON OF T.N.T EXPLOSIVE, 233 FOOT WIDE CRATER 29 FEET DEEP,10 P.S.I. AT 1000 FEET (P), 230 DB AT 10000 FT(N) -REF.2.

240?(N)TORNADO, FUJITSU 5, ENERGY GUESS BASED ON 300 MILE PER HOUR WIND, 1 MILE WIDE -REF.1.1997

241.46 (Q) = blast wind pressure from a 100 atm overpressure

243 (N)LARGEST NON-NUCLEAR EXPLOSION EVER, 1947 DESTRUCTION OF NAZI U-BOAT PENS

USED 7100 TONS OF EXPLOSIVE -REF.1. -REF.3.

247 (P) BOMB INSIDE SHOCK WAVE MAXIMUM LIMIT PRESSURE OF T.N.T. EXPLOSIVE -REF.2.4

248 (N)ATOMIC BOMB-HIROSHIMA AND NAGASAKI JAPAN AUG. 6, 9, 1945.TRAGICALLY KILLED

300,000 PEAPLE. TOTALLY DISINTEGRATED 16 SQUARE MILES, CRACKED DISTANT CONCRETE WALLS 12” THICK, EQUAL TO 20,000 TONS OF T.N.T., WIND WAS AROUND 300 MILES PER HOUR, DESTROYED WALLS 28” THICK AT 1 MILE.POWER TO MAKE A CRATER 633 FEET WIDE AND 80 FEET DEEP -REF.1.2.

254.09 (P) = 1000 atmospheres overpressure, dynamic pressure = 261.721 db(Q)

255 (N) 600 KILOTONS GROUND BURST CRATER IS 2112 FEET WIDE AND 211 FEET DEEP -REF.2.

257 (N)NUCLEAR BOMB, 1 MEGATON (1 MILLION TONS OF T.N.T.) -REF.2.

? (N)NUCLEAR BOMB "OAK" 8.9 MEGATON, ENEWETAK,JUNE 29 1958,5740 FEET WIDE 204 DEEP CRATER

261.721 (Q) = dynamic blast wind pressure generated from a 1000 atmosphere overpressure

274.09 (P) = 10000 atmospheres overpressure, dynamic pressure = 282.042 db(Q)

278 (N)NUCLEAR BOMB, “BRAVO” TEST 15 MEGATONS, 1954, BIKINI ATOLL, MARSHALL ISLANDS -REF.2.

? (N)METEOR HITTING EARTH, “ARIZONA CRATER” SPEED WAS 44 MILES PER SECOND

AND ABOUT THE SIZE OF A HOUSE AND MADE A CRATER ONE MILE IN DIAMETER 20 MT T.N.T.

? (N)NUCLEAR BOMB, 20 MEGATONS, SURFACE BURST CRATER IS 7392 FEET WIDE AND 792 FEET DEEP

282 (N)NUCLEAR BOMB, 57 MEGATONS HYDROGEN LARGEST EVER DETONATED, 1961

SHOCK WAVES CIRCLED THE EARTH 3 TIMES, FIRST ORBIT TOOK 36 HR 27 MIN. -REF.2.

282.042 db(Q) = dynamic wind pressure from a 10000 atm overpressure source

286 (N)MT. SAINT HELENS VOLCANO ERUPTION-BABY VOLCANO, BLEW DOWN TREES 16

MILES AWAY. COULD BE SEEN FROM OUTER SPACE ON THE SPACE SHUTTLE

BLEW OUT SOME WINDOWS IN SEATTLE-TACOMA 200 MILES AWAY, 163 db (P) -REF.20.

294.09 (P) = 100000 atmosphere overpressure, dynamic pressure = 302.0488 db(Q)

296 (N)EARTHQUAKE 8.6 RIECHTER SCALE- GROUND MOVED UP AND DOWN 13 FEET. -REF.1.3. 1988

300 (N)HURRICANE – AVERAGE, EXTREME ENERGY IS “DILUTED” BY COVERING 500,000

SQUARE MILES. ENERGY = APPROX. 1000 NUCLEAR BOMBS A SECOND.

302?(N) TUNGUSTA SIBERIA METEOR, BLEW DOWN HOUSES 600 MILES AWAY -REF.1.3. 1989

302.0488 db(Q) = dynamic pressure from a 100000 atmospheres overpressure

310 (N)KRAKATOA VOLCANO ERUPTION-1883 A.D., CRACKED ONE FOOT THICK CONCRETE

AT 300 MILES, CREATED A 3000 FOOT TIDAL WAVE, HEARD 3100 MILES AWAY,

SOUND PRESSURE CAUSED BAROMETERS TO FLUCTUATE WILDLY AT 100 MILES

INDICATING LEVELS OF AT LEAST 170-190 DB (P) AT THIS DISTANCE OF 100 MILES

EVEN WHEN SHOUTING IN SOMEONES EAR, COULD NOT BE HEARD AT 100 MILES

CAUSED FOG TO APPEAR AND DISAPPEAR INSTANTLY AT HUNDREDS OF MILES

ROCKS WERE THROWN TO A HIEGHT OF 34 MILES. DUST AND DEBRIS FELL CONTINOUSLY FOR 10 DAYS AFTER BLAST. PRODUCED VERY COLORFUL SUNSETS FOR ONE YEAR, EJECTED 4 CUBIC MILES OF

THE EARTH. CREATED ANTI-NODE OF NEGATIVE PRESSURE AT THE EXACT OPPOSITE SIDE OF THE EARTH.SOUND COVERED 1 / 10 OF THE WORLDS SURFACE, SHOCK (SOUND) WAVES “ECHOED” AROUND THE EARTH 36 TIMES AND LASTED FOR ABOUT A MONTH! -REF.19.

316 (N)VOLCANO ERUPTION SORANTINI, ITALY,1470 B.C. ALTHOUGH MORE ENERGY THAN KRAKATOA, IT BLEW UP OVER A LONGER PERIOD OF DAYS AND NOT AS VIOLENTLY, HENCE THE INSTANT PEAK PRESSURE IS BELIEVED TO BE LOWER -REF.1.3.

THAN KRAKATOA. 15 CUBIC MILES EJECTED, CREATED TIDAL WAVE 165 FEET

HIGH AT A DISTANCE OF 80 MILES -REF.3.

320 (N)VOLCANO ERUPTION, TAMBORA INDONESIA,1815, EJECTED 36 CUBIC MILES.APPROXIMATELY EQUAL TO

14,000 MEGATON NUCLEAR BOMBS OR A 14 GIGATON BOMB BASED ON EJECTED VOLUME,CHANGE IN MEGATONS TIMES 1.345 EQUALS VOLUME EJECTED CHANGE.IF WAS A NUCLEAR BOMB IT WOULD CREATE A CRATER ABOUT 12.4 MILES WIDE AND 1.33 MILES DEEP.INTERNAL PRESSURE IS BELIEVED TO BE ABOUT 47 MILLION P.S.I. = 347 DB (P) -REF.1.3.
 
"The explosions were so violent that they were heard 2,200 miles (3,500 km) away in Australia and the island of Rodrigues, near Mauritius, 4,800 km away; the sound of Krakatoa's destruction is believed to be the loudest sound in recorded history, reaching levels of 180 dBSPL 100 miles (160 km) away."

i want THAT in my car //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 
-30 (N) ONE HUMAN TALKING 20 MILES AWAY ( 60 DB / METER AT A DISTANCE OF 20 MILES )-REF.1.2003

-4 TO +4 (N) THE TICKING OF AN ORDINARY WRISTWATCH AT 1 METER -REF.1 2003

0 (N) BEGINNING OF HEARING, A MOSQUITO 10 FEET AWAY, THE EAR DRUM MOVES LESS -REF.1.1990

THAN 1 / 100 THE LENGTH OF AN AIR MOLECULE (N)

3.5 (P) 1E-10 METERS OF MERCURY = 0.0000000001 METERS OF MERCURY

10 (P) ABSOLUTE SILENCE, ATT-BELL LABORATORY “ QUIET ROOM “

13 (P) ORDINARY LIGHT BULB HUM

15 (N) A PIN DROP FROM A HIEGHT OF 1 CENTIMETER AT A DISTANCE OF 1 METER -REF.1.2003
How is it called absolute silence at 10 db? Is "absolute" just a term, as in "absolute zero"?

 
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