>> Jimmy: THANK YOU FOR COMING. 
>> EXCITEMENT FOR SCIENCE. 
>> Jimmy: THIS IS YOUR 15th TIME
ON THE SHOW, DID YOU KNOW THAT?
>> WOW. 
>> Jimmy: WE STILL HAVE ALL OUR 
FINGERS. 
>> SO FAR, YEAH, WOW. 
>> Jimmy: IT'S REALLY WONDERFUL.
WHAT ARE WE GOING TO DO HERE 
TONIGHT, SCIENCE BOB?
>> YOU KNOW I LOVE MY FAVORITE 
LIQUID, LIQUID NITROGEN. 
>> Jimmy: YOU DO LOVE LIQUID 
NITROGEN, THE NUMBER ONE 
CONSUMER OF LIQUID NITROGEN I 
KNOW. 
>> GRAB THOSE GLOVES, PUT SOME 
GLOVES ON.
THIS IS A CONTAINER OF LIQUID 
NITROGEN.
NITROGEN IS 80% WHAT WAS WE 
BREATHE.
IF THEY COMPRESS THAT, IT GETS 
VERY, VERY COLD.
AND IT'S 321 DEGREES BELOW ZERO 
FAHRENHEIT.
VERY, VERY COLD. 
>> Jimmy: IT'S COLD, YES.
IF THAT WAS A POOL YOU'D NEVER 
GET IN THERE. 
>> NO, IT WOULD BE THE LAST 
THING YOU DID.
SO IF YOU POUR THIS ON THE 
GROUND OR IF YOU POUR THIS ON A 
FLAT SURFACE, GO AHEAD AND GIVE 
IT A TRY.
SEE HOW IT DISTANCES ACROSS.
ALMOST LIKE ANTI-GRAVITY, RIGHT?
>> Jimmy: YEAH IT'S GREAT. 
>> SO THERE'S A NAME FOR THAT.
IT'S CALLED THE LEIDENFROST 
EFFECT. 
>> Jimmy: OH.
IS THAT ANY RELATION TO AUGUST 
KUNDT?
[ LAUGHTER ]
>> NO, NO.
I DON'T KNOW IF THEY EVER GOT 
ALONG OR NOT.
SO I THOUGHT I'D GIVE YOU A TRY 
AT HOME EXPERIMENT.
THESE ARE LITTLE POLYMER ORBS.
THEY START OFF AS BBs.
PUT THEM IN WATER OVERNIGHT, 
THEY GET SQUISHY POLYMER ORBS.
>> WHERE DO YOU GET THESE?
>> FLORISTS USE THEM, TOY 
STORES, THEY'RE SORT OF A TOY 
ITEM.
TAKE THAT AND PUT IT -- WE HAVE 
A VERY HOT PAN.
THIS IS LIKE LIQUID NITROGEN 
GOING ON A SURFACE.
BECAUSE THE FLOOR TO LIQUID 
NITROGEN IS SUPER, SUPER HOT.
IF YOU PUT THAT IN THERE, WHAT 
ENDS UP HAPPENING -- 
[ LAUGHTER ]
TRY ANOTHER. 
>> Jimmy: BE MORE GENTLE?
>> THE GLOVES ON --
>>. 
>> Jimmy: WHY DID YOU TELL ME TO
PUT THE GLOVES ON?
>> FOR THE FROST. 
>> Jimmy: SO PRETTY.
>> THAT GOES IN THERE.
SEE HOW IT DANCES AROUND?
WHEN IT TOUCHES THE PAN IT EMITS
A BURST OF STEAM.
AND THAT ACTUALLY GETS IT 
DANCING AROUND.
YOU CAN PUT SOME MORE IF YOU 
WANT.
>> Jimmy: OH, LOOK AT THAT.
>> ISN'T THAT CUTE?
LA 
[ CHEERS AND APPLAUSE ]
>> Jimmy: WOW.
AND HOW LONG WILL THEY GO ON 
LIKE THAT?
>> AS LONG AS -- UNTIL THEY ALL 
DRY UP.
YOU CAN TRY IT AT HOME.
YOU NEED VERY HOT PAN.
AND BE CAREFUL. 
>> Jimmy: THE KIDS WOULD LOVE 
THAT. 
>> YEAH, YEAH.
I LIKE THE SOUND. 
>> Jimmy: I COULD WATCH THIS FOR
LIKE AN HOUR.
[ LAUGHTER ]
YOU KNOW THEY HAVE CHANNELS WITH
WEIRD STUFF LIKE THIS.
OKAY, ALL RIGHT.
GOOD, ALL RIGHT.
>> LET IT COOL OFF. 
>> Jimmy: WOW, LIKE HAUNTED 
JELLYBEANS. 
>> I DON'T KNOW HOW LONG IT 
TAKES TO STOP. 
>> Jimmy: ALL RIGHT, WE'LL FIND 
OUT, I GUESS.
>> NOW WE'RE GOING TO TAKE THAT 
IDEA AND SHOW ANOTHER COOL 
FEATURE ABOUT LIQUID NITROGEN, 
WHICH IS THAT IT EXPANDS A LOT 
WHIT GOES FROM LIQUID TO GAS.
WE'RE GOING TO TAKE ADVANTAGE OF
THAT. 
>> Jimmy: SHOULD I PUT MY GLOVES
BACK ON?
>> WE'VE GOT NEW GLOVES IF YOU 
WANT. 
>> Jimmy: DIFFERENT GLOVES FOR 
EVERYTHING, HOW ABOUT THAT. 
>> SO WHAT YOU'RE GOING TO DO IS
I'VE GOT A LITTLE CONTAINER OF 
LIQUID NITROGEN HERE.
AND THEN I'VE GOT A PING-PONG 
BALL.
>> Jimmy: WHY DO THEY LOOK LIKE 
THAT?
>> YOU'LL SEE WHY.
BECAUSE I'VE POKED A TINY LITTLE
HOLE INSIDE OF ONE SIDE, THE 
YELLOW SIDE, ANOTHER ONE INSIDE 
THE BLACK ONE. 
>> Jimmy: OKAY. 
>> WHAT WE WANT TO DO IS FILL IT
UP WITH LIQUID NITROGEN AS MUCH 
AS WE CAN.
AND THEN WHITEN IT EXPANDS, JET 
OF NITROGEN GAS WILL COME OUT OF
HERE, THAT SHOULD CAUSE IT TO 
SPIN AROUND. 
>> Jimmy: AWESOME. 
>> GRAB A LITTLE CLAMP HERE. 
>> Jimmy: OKAY. 
>> WE'RE GOING TO -- PICK UP ONE
OF THOSE.
>> Jimmy: ALL RIGHT. 
>> IT'S A YELLOW AND BLACK, KIND
OF HELPS US KNOW WHETHER OR NOT 
IT'S SPINNING.
>> I SEE, VERY GOOD. 
>> GO AHEAD AND DIP THAT SO IT'S
WHOLLY SUBMERGED. 
>> Jimmy: OKAY. 
>> SUBMERGE THAT IN, I'LL GET 
ONE TOO, ANOTHER ONE.
NOW BECAUSE THE AIR IN THERE IS 
COMPRESSING, IT'S DRAWING IN THE
LIQUID NITROGEN. 
>> Jimmy: YEAH, I KNOW.
[ LAUGHTER ]
>> GET A LITTLE BIT IN THERE.
ALL RIGHT.
AND THAT SHOULD BE GOOD ENOUGH.
GO AHEAD AND POP THAT INTO THAT 
TRAY THERE. 
>> Jimmy: OKAY.
WHAT IF WE PUT ONE IN THE FRYING
PAN?
WOULD ANYTHING CRAZY HAPPEN?
OH, LOOK AT THAT. 
>> ISN'T THAT GREAT?
>> Jimmy: THAT IS GOOD.
[ APPLAUSE ]
>> YOU CAN SEE THAT SPINNING 
EFFECT.
>> Jimmy: YEAH.
ALL RIGHT.
>> THERE WE GO. 
>> Jimmy: AND NOW WE HAVE?
>> I'LL SHOW YOU A DIFFERENT 
VERSION OF IT. 
>> Jimmy: OKAY, GOOD, ALL RIGHT.
>> THIS IS A LARGER VERSION OF A
HERO'S ENGINE.
NORMALLY THEY'D PUT A LITTLE 
WATER IN HERE.
THEY'D PUT STEAM.
THEN WE HAVE OPPOSING JETS HERE 
THAT WOULD THEN SPIN IT AROUND.
BUT WE DON'T REALLY HAVE TIME 
FOR THE WHOLE HEAT THING.
>> Jimmy: OKAY. 
>> SO WE ARE GOING TO USE OUR 
LIQUID NITROGEN. 
>> Jimmy: THANK YOU.
>> ALL RIGHT. 
>> Jimmy: YOU KNOW IT GETS 
SERIOUS WHEN THE MASKS COME OUT.
>> OH, YEAH.
NOW HERE'S THE THING.
YOU ENJOY CHOCOLATE MILK?
>> Jimmy: WHAT?
>> CHOCOLATE MILL INCOME. 
>> Jimmy: CAN'T HEAR YOU. 
>> CHOCOLATE -- LET'S SAY YOU GO
TO MAKE A LITTLE BIT OF 
CHOCOLATE MILK, RIGHT?
>> Jimmy: THIS IS NOT HOW I DO 
IT. 
>> THIS IS NOT?
>> Jimmy: NO, WE USE A SPOON. 
>> OH, WELL SEE, THAT'S THE 
THING.
WHAT IF YOU DON'T HAVE A SPOON?
HERE, TAKE THAT. 
>> Jimmy: ALL RIGHT. 
>> SO POUR IN CHOCOLATE MILK -- 
I DON'T KNOW HOW MUCH CHOCOLATE 
YOU LIKE IN THERE. 
>> Jimmy: A LOT IS THE ANSWER.
ALL RIGHT.
>> THAT'S GOOD. 
>> Jimmy: OKAY.
>> ALL RIGHT.
SO WHAT IF YOU WANT CHOCOLATE 
MILK AND YOU DON'T HAVE A SPOON?
YOU DON'T HAVE A SPOON, BUT YOU 
DO HAVE A 12-INCH STAINLESS 
STEEL SPHERE AND LIQUID 
NITROGEN.
THIS IS THE WAY TO GO. 
>> Jimmy: OKAY. 
>> WOULD YOU MEASURE, FILL THAT 
CUP WITH LIQUID NITROGEN. 
>> Jimmy: WHERE WILL WE GET 
LIQUID NITROGEN?
RIGHT HERE. 
>> GO TO YOUR PANTRY.
NOW WE'RE GOING TO POUR THAT 
INTO OUR HERO'S ENGINE. 
>> Jimmy: OKAY.
>> THERE WE GO.
OH, YEAH, IT'S GOING IN -- 
>> Jimmy: IS THAT ENOUGH?
>> YEAH. 
>> Jimmy: LET'S DO ALL OF IT.
>> OH, MAN.
>> Jimmy: YEAH.
LET'S REALLY BLOW THE LID OFF 
THIS THING.
OKAY, ALL RIGHT. 
>> WHICH WE ACTUALLY MIGHT DO. 
>> Jimmy: OKAY.
>> ALL RIGHT, THERE WE GO. 
>> Jimmy: AGAIN, WE'RE MAKING 
CHOCOLATE MILK.
[ LAUGHTER ]
AT THE END OF THIS 
DEMONSTRATION, THERE LAB A GLASS
OF CHOCOLATE MILK. 
>> LET'S SEE IF WE HAVE ANY 
BETTER LUCK.
GIVE IT A HEAD START.
OH, I THINK -- I THINK IT'S -- 
OH, I CAN FEEL IT NOW.
>> Jimmy: YEAH.
OH, YEAH.
OH, YEAH.
WE'RE GOING, JIMMY. 
>> Jimmy: IT'S GOING. 
>> LOOK AT IT!
>> Jimmy: HERE WE GO.
[ CHEERS AND APPLAUSE ]
>> WOW!
>> Jimmy: OH MY GOD, IT'S GOING 
TO BLOW!
>> I THINK IT'S WORKING!
OH MY GOODNESS!
I THINK IT'S WORKING.
WAIT!
MAYBE WE PUT TOO MUCH IN.
>> Jimmy: HOLD ON, I'LL GET THE 
TONGS!
>> I'M GOING IN, I'M GOING IN.
HOLD ON.
AAH!
[ CHEERS AND APPLAUSE ]
>> Jimmy: IT'S INCREDIBLE!
>> YES!
[ CHEERS AND APPLAUSE ]
>> Jimmy: WHEN WE COME BACK, 
WE'RE GOING TO HAVE FIRE WHEN WE
COME BACK?
>> THERE WILL BE FIRE. 
>> Jimmy: WE'RE GOING TO HAVE 
FIRE WHEN WE COME BACK, WE'LL BE
RIGHT BACK.
>> Jimmy: WE'RE BACK WITH 
SCIENCE BOB PFLUGFELDER.
WHY ARE WE DRESSED LIKE BAKED 
POTATOES?
>> THESE ARE FIRE CHUTES.
THEY'RE NOT JUST SCFOR SHOW, WEL
NEED THESE. 
>> Jimmy: WHY ISN'T ANYBODY ELSE
IN A FIRE SUIT?
WE'RE GOING TO RELEASE TOXIC 
GAS, HOLD YOUR BREATH, EVERYBODY
WILL BE FINE. 
>> EVERYBODY WILL BE GREAT. 
>> Jimmy: WHAT ARE WE GOING TO 
DO HERE?
>> A LONG TIME AGO, THIS IS ONE 
OF THESE WONDERFUL SCIENTIFIC 
ACCIDENTS. 
>> Jimmy: OKAY. 
>> THIS IS JUST REGULAR COTTON, 
LIKE ANY COTTON YOU'D FIND.
BUT THERE'S A LITTLE ACCIDENT 
AND IT GOT MIXED, BACK IN THE 
1800s, GOT MIXED WITH SOME 
SULFURIC ACID AND NIGHT TRICK 
A
ACID. 
>> Jimmy: THAT HAPPENS TO ME 
SOMETIMES. 
>> IT CREATES OF COURSE 
NITROCELLULOSE.
WHICH CHANGES THE MOLECULAR 
BONDS AND INSTEAD OF BECOMING 
COTTON IT BECOMES GUN COTTON. 
>> Jimmy: I LIKE IT. 
>> IT BURNS MUCH, MUCH 
DIFFERENT.
IF YOU WERE TO BURN THIS WITH 
JUST REGULAR COTTON, PROBABLY 
TAKE A MINUTE OR TWO TO BURN.
BUT YOU'VE GOT TO -- GET ONE OF 
THOSE LITTLE LIGHTERS THERE.
AND I'LL HOLD THIS OUT.
AND WE'LL SEE HOW GUN COTTON 
BURNS. 
>> Jimmy: ALL RIGHT.
THIS IS NOW BURNING GUN COTTON.
GEEZ!
WHAT THE HELL!
[ APPLAUSE ]
>> I KNOW.
>> Jimmy: IT DIDN'T BURN, IT 
DISAPPEARED. 
>> NO SMOKE, NO ASHES.
>> IT'S THE PERFECT CRIME!
>> SO THEY ACTUALLY ENDED UP 
USING THIS IN WORLD WAR II, IN 
BATTLESHIPS.
IT WAS PRETTY COOL?
OKAY. 
>> IF YOU TAKE THAT AND COMPRESS
IT, THEN YOU GET MORE OF 
SOMETHING LIKE A WEAPON. 
>> Jimmy: OH, GREAT. 
>> WE'VE GOT A LITTLE GUN COTTON
AT THE BOTTOM OF THIS, WE 
THOUGHT, WE COULD SHOOT IT OFF.
MAGICIANS SOMETIMES USE THIS 
STUFF.
LET'S HAVE A LITTLE FUN WITH IT.
BEHIND US IS A SERIES OF 32 
BALLOONS.
>> RIGHT. 
>> HOWEVER, UNLIKE BEING FILLED 
WITH AIR OR HELIUM, THESE ARE 
FILLED WITH HYDROGEN GAS WHICH 
IS KIND OF FLAMMABLE. 
>> Jimmy: OKAY.
GREAT. 
>> WE'RE GOING TO -- 
>> Jimmy: THIS COULD HAVE KILLED
THAT CLOWN IN THE MOVIE "IT."
>> I KNOW.
[ LAUGHTER ]
WE'RE GOING TO HAVE YOU FIRE GUN
COTTON AT THAT FIRST BALLOON. 
>> Jimmy: GREAT. 
>> THAT'S GOING TO EXPLODE AND 
WE'RE GOING TO SEE IF WE CAN 
CREATE A CHAIN REACTION THAT 
WILL BLOW ALL THESE BALLOONS. 
>> Jimmy: I WOULD LOVE TO. 
>> IF IT WORKS, IT WILL GO IN 
LIKE A SECOND. 
>> Jimmy: OKAY. 
>> BUT WE'VE NEVER ACTUALLY 
TRIED IT AT THIS SCALE. 
>> Jimmy: OH, OKAY, GREAT.
>> YEAH. 
>> Jimmy: I NEED TO PUT THIS ON?
>> YEAH LET'S GET THIS ON. 
>> Jimmy: OKAY. 
>> HYDROGEN BURNS AT ABOUT 1,000
DEGREES. 
>> Jimmy: EVERYBODY KNOWS, BOB.
[ LAUGHTER ]
>> AND TURN AND FACE THAT 
BALLOON.
AND THEN COME DOWN ON YOUR KNEES
SNIPER STYLE. 
>> Jimmy: ARE YOU PUTTING THAT 
THING UP MY BUTT?
[ LAUGHTER ]
>> COME ON DOWN, COME DOWN HERE.
>> Jimmy: ALL RIGHT. 
>> HERE WE GO, THAT'S GREAT.
ALL RIGHT, HERE IS YOUR HARRY 
POTTER WAND. 
>> Jimmy: OKAY. 
>> I'M GOING TO LIGHT THE END OF
IT AND YOU'RE GOING TO POINT IT 
AT THAT BALLOON.
ARE YOU READY?
>> Jimmy: I'M READY, YEAH. 
>> THERE WE GO.
IN THREE, TWO, ONE -- 
[ CHEERS AND APPLAUSE ]
>> Jimmy: WOW.
AWESOME.
HOW ABOUT THAT.
INSTANT REPLAY. 
>> LOOK AT THAT. 
>> Jimmy: HOW, THIS IS HOW WE'RE
GOING TO DEFEAT NORTH KOREA, 
EVERYBODY!
[ CHEERS AND APPLAUSE ]
SCIENCE BOB PFLUGFELDER, THANK 
YOU, SCIENCE BOB, MUCH 
APPRECIATED.
