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Liquid Nitrogen Demonstration

Aaron Keller, Chemistry teacher, demonstrates the amazing properties of liquid nitrogen. He explains each demonstration in an understandable way. The temperature of liquid nitrogen is -196C (-321F). He explains how a dewar flask works. He pulls balloons out of a cooler, showing the expansion of a gas as it warms. He demonstrates the explosive power of the expansion of liquid nitrogen in an enclosed container. Liquid nitrogen is so cold that the floor is like a hot griddle. Liquid nitrogen has a very low viscosity. He demonstrates how brittle a flower becomes when frozen in a liquid nitrogen bath. Finally, he shows how to shatter a racquetball. As a bonus he shows how nitrogen gas can be used to put out a candle flame.
Категория: Education
Время: 00:05:05.250
Теги: physical science chemistry liquid nitrogen cryo cryofluid cryogenics racquetball
 

Hand vs. Liquid Nitrogen and the Leidenfrost Effect

I stick my hand (momentarily) directly into liquid nitrogen but don't suffer any injuries due to the Leidenfrost effect. The Leidenfrost effect is the formation of a gas barrier between a hot surface and a boiling liquid if the temperature difference is great enough. This gas barrier greatly slows the heat transfer between the two and allows the liquid to last longer and consequently the hot surface to remain hot longer. This effect can be seen in a frying pan as it's being heated. At first the water quickly boils as it's dropped in but at a hot enough temperature the Leidenfrost effect takes over and makes the water skate around the surface lasting a very long time. Liquid nitrogen vs. a room temperature object will also exhibit the effect preventing it from instantly freezing the object... such as my hand.
Категория: Science & Technology
Время: 00:02:40.500
Теги: Liquid nitrogen experiment freezing hand Leidenfrost effect cool dangerous science physics chemistry nurd rage nurdrage
 

Liquid Nitrogen Into A Swimming Pool

At Penguicon 4 in 2006, Nifty Guest Howard Tayler of www.SchlockMercenary.com took this video of Penguicon co-founder Rob Landley throwing a bowl of liquid nitrogen in the swimming pool, and the resulting billow of fog.
Категория: Howto & Style
Время: 00:01:09
Теги: liquidnitrogen LN2 nitrogen penguicon howardtayler swimmingpool pool
 

Liquid Nitrogen Explosion - Cool Science Experiment

Check out this and other cool science experiments at www.stevespanglerscience.com Steve Spangler surprised meteorologist Becky Ditchfield with an in-studio demonstration of his liquid nitrogen explosion. The reaction on her face is priceless. About Steve Spangler Science... Steve Spangler is a celebrity teacher, science toy designer, speaker, author and an Emmy award-winning television personality. Spangler is probably best known for his Mentos and Diet Coke geyser experiment that went viral in 2005 and prompted more than 1000 related YouTube videos. Spangler is the founder of www.SteveSpanglerScience.com, a Denver-based company specializing in the creation of science toys, classroom science demonstrations, teacher resources and home for Spangler's popular science experiment archive and video collection. Spangler is a frequent guest on the Ellen DeGeneres Show where he takes classroom science experiments to the extreme. Check out his pool filled with 2500 boxes of cornstarch! Cool Science Toys - www.SteveSpanglerScience.com Sign up for the Experiment of the Week - http Watch Spangler's Science Videos - www.stevespanglerscience.com Attend a Spangler Hands-on Science Workshop for Teachers - www.stevespanglerscience.com Visit Spangler's YouTube Channel - www.youtube.com Join the conversation on Steve Spangler's blog - www.SteveSpangler.com Additional Information On the education side, Spangler started his career as a science teacher in the Cherry Creek School district for 12 ...
Категория: Education
Время: 00:02:23.250
Теги: Liquid Nitrogen Explosion Cool Science Experiment Steve Spangler
 

Nitrogen - Periodic Table of Videos

Number 7 on the periodic table, Nitrogen is the most abundant element in Earth's atmosphere. More elements at www.periodicvideos.com
Категория: Science & Technology
Время: 00:03:02.250
Теги: nitrogen
 

BREAK HEARTS with Liquid Nitrogen

Most people break hearts with words. Nerds break hearts with Liquid Nitrogen! Disclaimer: This is actually a pig's heart that was obtained from a pig that was already being processed into food products. No humans were harmed, or unlawful suffering to animals was caused outside of established food industry practices.
Категория: Science & Technology
Время: 00:01:21.750
Теги: Liquid nitrogen freezing heart shattering breaking science valentine valentine's day
 

Fun With Liquid Nitrogen - Cool Science Experiment

Check out this and other cool science experiments at www.stevespanglerscience.com Steve demonstrates the effects Liquid Nitrogen has on different objects. About Steve Spangler Science... Steve Spangler is a celebrity teacher, science toy designer, speaker, author and an Emmy award-winning television personality. Spangler is probably best known for his Mentos and Diet Coke geyser experiment that went viral in 2005 and prompted more than 1000 related YouTube videos. Spangler is the founder of www.SteveSpanglerScience.com, a Denver-based company specializing in the creation of science toys, classroom science demonstrations, teacher resources and home for Spangler's popular science experiment archive and video collection. Spangler is a frequent guest on the Ellen DeGeneres Show where he takes classroom science experiments to the extreme. Check out his pool filled with 2500 boxes of cornstarch! Cool Science Toys - www.SteveSpanglerScience.com Sign up for the Experiment of the Week - http Watch Spangler's Science Videos - www.stevespanglerscience.com Attend a Spangler Hands-on Science Workshop for Teachers - www.stevespanglerscience.com Visit Spangler's YouTube Channel - www.youtube.com Join the conversation on Steve Spangler's blog - www.SteveSpangler.com Additional Information On the education side, Spangler started his career as a science teacher in the Cherry Creek School district for 12 years. Today, Steve travels extensively training teachers in ways to make learning more ...
Категория: Science & Technology
Время: 00:02:33.750
Теги: Cool Science Experiments Fun Liquid Nitrogen Balloon Flower Magic Steve Spangler
 

Poor man's "Liquid Nitrogen"

UNSAFE, NOT FOR KIDS! Main article: bit.ly amasci.com Can't get liquid nitrogen? Then make your own -80C/110F version by using Dry Ice. Note that this science demonstration involves several major safety hazards, and should only be performed by skilled educators. If used for science fair projects, close parent/teacher supervision is required. But also go see bit.ly SFGATE: "The War On Curiosity" (stamping out hobbyist science in order to keep kids safe.) For lots of suggested low-temp physics demonstrations click on the above link. Or, look on the web for liquid nitrogen demonstrations. Note that dry ice comes from companies listed in your local yellow pages. Some welder supply stores carry it. In Seattle, you can find it in the seafood section of QFC neighborhood grocery, and at some Fred Meyer stores. Ask for dry ice pellets rather than slabs, so you won't have to chop it up yourself. . Lots more stuff at SCIENCE HOBBYIST amasci.com . Note: trolls/spammers blocked immediately, zero tolerance
Категория: Science & Technology
Время: 00:03:53.250
Теги: science fair project projects dangerous hazardous physics science-fair kids science-projects maker makers amateur-science diy chemistry amasci dry-ice ln2 nitrogen liquid-nitrogen demo demonstrations tutorials hobbyist co2 carbon dioxide
 

Hand vs. Liquid Nitrogen - Revisited

I go back to sticking my hand into liquid nitrogen but remain uninjured due to the Leidenfrost effect. The Leidenfrost effect is the formation of a gas barrier between a hot surface and a boiling liquid if the temperature difference is great enough. This gas barrier greatly slows the heat transfer between the two and allows the liquid to last longer and consequently the hot surface to remain hot longer. This effect can be seen in a frying pan as it's being heated. At first the water quickly boils as it's dropped in but at a hot enough temperature the Leidenfrost effect takes over and makes the water skate around the surface lasting a very long time. Liquid nitrogen vs. a room temperature object will also exhibit the effect preventing it from instantly freezing the object... such as my hand.
Категория: Education
Время: 00:03:49.500
Теги: Liquid nitrogen experiment freezing hand Leidenfrost effect cool dangerous science physics chemistry nurd rage nurdrage
 

Cooking with Liquid Nitrogen - Ferran Adria and Harold McGee

Complete video at: fora.tv Chef Ferran Adria, head chef of elBulli, and Harold McGee, author of On Food and Cooking, describe how liquid nitrogen is used in restaurant kitchens to create innovative dishes like alcohol sorbets and frozen pistachio puree truffles. ----- No one can get into elBulli, Ferran Adria's restaurant on the northeast coast of Spain. But plenty of people certainly try: every year, the restaurant receives over two million requests for only 8000 seats during the six months it is open. For the other six months, Adria, who is proud to be called the "Salvador Dali of the Kitchen," travels, dreams, and creates at his "food laboratory" in Barcelona, called elBulli Taller, where his team includes a chemist and an industrial designer who also design plates and serving utensils to go with the food. No wonder, as Corby Kummer wrote in The Atlantic, "making the twisty two-hour drive from Barcelona for a dinner that ends well into the wee hours has become a notch on every foodie's belt--perhaps the notch, given the international derby to get reservations." For mortals who won't be making the trip soon--or who didn't hit the lottery last year in the German contemporary-art exhibition Documenta, which flew two people at random per day to el Bulli to experience "the exhibition" that is dinner at elBulli--Adria has given the world A Day at elBulli: An Insight into the Ideas, Methods and Creativity of Ferran Adria. This is the first book to take a behind-the-scenes ...
Категория: Science & Technology
Время: 00:03:12.750
Теги: ice cream gas elements frozen freezing culinary cuisine cooks chefs restaurants science chemistry kitchen eating eats experiments LN2 cold dessert fora.tv foratv fora tv
 
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