How can you possibly keep a balloon from bursting when it comes in contact with fire?
What you need:
A candle
Matchbox
Two balloons
Water
What to do:
1. Blow up one balloon. Knot it so that its air doesn't escape.
2. Light the candle.
3. Hold the balloon above the candle and then lower it slowly, closer to the flame
4. Fill the second un-inflated balloon with a little water. Then blow it up with air. Knot off the end.
5. Hold the water-filled balloon over the flame. Allow the flame to touch the balloon so that the water-holding area is just above it.
What happens:
The first balloon which was filled with just air popped even before it touched the flame. Just being close to the heat melted the rubber. The second balloon didn't pop. A black dot materialised on the surface of the balloon where it was in contact with the flame.
Why?
The only difference between both balloons is the presence of water. Water is good at soaking up heat. As the flame burns below balloon, the water closest to the flame gets heated and rises up. Cooler water replaces it and stays there until it gets hot and rises. Thus, the water keeps taking the heat away from the rubber of the balloon. The cycle continues until the heat exceeds the waters capacity to absorb it. Only then will the balloon pop. The black dot formed on the balloon's surface is nothing but soc left by the candle flame.
Picture Credit : Google
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Team USA’s youngest-ever beach volleyball team was able to dispatch Ana Patricia Silva Ramos and Rebecca Cavalcanti Barbossa Silva in three sets to win their third straight victory in the Tokyo Olympics and stay in medal contention.
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But Tokyo is under a state of emergency because of a rise in Covid-19 cases, so there was only a smattering of applause when it was over. Most of the 12,000 seats were empty.
“Yes,” they answered in unison when asked if they find it jarring to compete to an audience of empty seats.
“We’ve gotten kind of used to it, but it’s still weird,” Claes, her skin glazed with sweat and sand, said after the match. “You can’t feed off their energy, so we have to feed off our energy.”
What’s worse, Sponsil said, is they can’t really cut loose and celebrate. They’re only allowed to spend two hours a day together because Claes, 25, is in quarantine until Sunday.
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But Tokyo is under a state of emergency because of a rise in Covid-19 cases, so there was only a smattering of applause when it was over. Most of the 12,000 seats were empty.
“Yes,” they answered in unison when asked if they find it jarring to compete to an audience of empty seats.
“We’ve gotten kind of used to it, but it’s still weird,” Claes, her skin glazed with sweat and sand, said after the match. “You can’t feed off their energy, so we have to feed off our energy.”
What’s worse, Sponsil said, is they can’t really cut loose and celebrate. They’re only allowed to spend two hours a day together because Claes, 25, is in quarantine until Sunday.
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But Tokyo is under a state of emergency because of a rise in Covid-19 cases, so there was only a smattering of applause when it was over. Most of the 12,000 seats were empty.
“Yes,” they answered in unison when asked if they find it jarring to compete to an audience of empty seats.
“We’ve gotten kind of used to it, but it’s still weird,” Claes, her skin glazed with sweat and sand, said after the match. “You can’t feed off their energy, so we have to feed off our energy.”
What’s worse, Sponsil said, is they can’t really cut loose and celebrate. They’re only allowed to spend two hours a day together because Claes, 25, is in quarantine until Sunday.
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Team USA’s youngest-ever beach volleyball team was able to dispatch Ana Patricia Silva Ramos and Rebecca Cavalcanti Barbossa Silva in three sets to win their third straight victory in the Tokyo Olympics and stay in medal contention.
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But Tokyo is under a state of emergency because of a rise in Covid-19 cases, so there was only a smattering of applause when it was over. Most of the 12,000 seats were empty.
“Yes,” they answered in unison when asked if they find it jarring to compete to an audience of empty seats.
“We’ve gotten kind of used to it, but it’s still weird,” Claes, her skin glazed with sweat and sand, said after the match. “You can’t feed off their energy, so we have to feed off our energy.”
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