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Why Are 96,000,000 Black Balls on This Reservoir?

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Why Are 96,000,000 Black Balls on This Reservoir?

I took a boat through 96 million black plastic balls on the Los Angeles reservoir to find out why they're there. The first time I heard about shade balls the claim was they reduce evaporation. But it turns out this isn't the reason they were introduced.

Huge thanks to LADWP for arranging this special tour for me. Next time let's put the GoPro on the submersible!

The balls are made of high density polyethylene (HDPE) which is less dense than water so they float on the surface of the reservoir even if they break apart. They are 10cm (4 inches) in diameter and contain about 210ml of water. So the main reason they are on the reservoir is to block sunlight from entering the water and triggering a chemical reaction that turns harmless bromide into carcinogenic bromate. This effect occurs with prolonged exposure to bromate so regulators insist that levels be kept below 10 microgram per liter on average over a 12 month period.

Special thanks to Patreon supporters:
Donal Botkin, Michael Krugman, Ron Neal, Stan Presolski, Terrance Shepherd, Penward Rhyme and everyone who provided feedback on an early draft of this video.

Thanks to:
Las Virgenes Reservoir for footage of initial shade ball dump
Euro-Matic for bird into jet-engine footage

Researched and Produced by Casey Rentz

Animations by Maria Raykova

Music from Colorful Animation 4 Seaweed

And from Kevin MacLeod Marty Gots a Plan

This is an educational video about the science of water quality.
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Backspin Basketball Flies Off Dam

How far would a basketball with backspin go?
Rotor wing experimental aircraft:
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Corner kick by Kyle:

How Ridiculous World Record Basket:
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California floats shade balls to battle drought

Tens of thousands of plastic balls were dumped intentionally into the biggest reservoir in Los Angeles to combat California’s drought. The balls that poured in were the last of 96 million balls, completing an evaporation barrier on the reservoir. John Blackstone reports on how they could help the state bounce back from its water emergency.
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World's Roundest Object!

The world's roundest object helps solve the longest running problem in measurement -- how to define the kilogram.
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A kilogram isn't what it used to be. Literally. The original name for it was the 'grave', proposed in 1793 but it fell victim to the French Revolution like its creator, Lavoisier. So begins the tale of the most unusual SI unit. The kilogram is the only base unit with a prefix in its name, and the only one still defined by a physical artifact, the international prototype kilogram or IPK.

But the problem with this definition has long been apparent. The IPK doesn't seem to maintain its mass compared to 40 similar cylinders minted at the same time. The goal is therefore to eliminate the kilogram's dependence on a physical object. Two main approaches are being considered to achieve this end: the Avogadro Project and the Watt Balance.

The Avogadro project aims to redefine Avogadro's constant (currently defined by the kilogram -- the number of atoms in 12 g of carbon-12) and reverse the relationship so that the kilogram is precisely specified by Avogadro's constant. This method required creating the most perfect sphere on Earth. It is made out of a single crystal of silicon 28 atoms. By carefully measuring the diameter, the volume can be precisely specified. Since the atom spacing of silicon is well known, the number of atoms in a sphere can be accurately calculated. This allows for a very precise determination of Avogadro's constant.

Special thanks to Katie Green, Dr. David Farrant, the CSIRO, and the National Measurment Institute for their help. Thanks also to Nessy Hill for filming and reviewing earlier drafts of this video.

There is debate as to whether this is truly the roundest object ever created. The Gravity Probe-B rotors are also spherical with very low tolerances such that they may in fact be rounder.

Music by Kevin McLeod (incompetech.com) Decision, Danse Macabre, Scissors
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I Waterproofed Myself With Aerogel!

Aerogel has extraordinary properties but it can be tough to work with. This video looks at modifying aerogels to take advantage of their unique characteristics.
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Huge thanks to Dr. Stephen Steiner and the crew at Aerogel Technologies. To find out more or buy your own aerogel sample, check out:

Thanks to Dr. Steven Jones and Dr. Mihail Petkov at NASA's Jet Propulsion Laboratory

And thanks to FLIR for loaning us the awesome high definition thermal camera. The footage is amazing!

Aerogel’s extraordinary properties are due in large part to its structure. Aerogel is a solid but on the nanoscale it has a mesh or sponge-like structure. The struts of this structure are nanoscale, as are the pores at around 20nm across. This makes silica aerogel incredibly light (it was once the lightest solid but has now been superseded by graphene aerogel), transparent and adsorbent.

An ice-cube sized piece of aerogel has an internal surface area roughly equal to half a football field. Aerogel is used in high end museum cases to regulate humidity. Plus it helps maintain the vacuum on the Mars Insight seismometers - it adsorbs moisture and other outgassed volatiles that come from the spacecraft itself. Proposed uses include as a physical insecticide by ‘drying out insects’ reducing the need for chemical and toxic pesticides.

Special thanks to all my Patreon supporters especially those who contributed feedback to an earlier draft of this video:
a human, Albert Jachowicz-Brzeziński, Alfred Wallace, Arjun Chakroborty, Brent Stewart, Chris Vargas, Chuck Lauer Vose, Clip Tree, Coale Shifflett, Colin Bellmore, DALE HORNE, Eric Velazquez, Fedor Indutny, Fran Rodriguez, James Wong, Jasper Xin, Joar Wandborg, Johnny, Jorge Angel Sandoval, June Kang, Kevin Beavers, Kishore Tipirneni, Levan Ferr, Listen Money Matters, Manuel Zürcher, Mark Bevilacqua, Mathias Göransson, Michael Bradley Wirz, Michael Krugman, Mohammed Al Sahaf, Nicholas Hastings, OddJosh, Patrick Čalija, Peter Tajti, Philipp Volgger, Roberto Rezende, Robin DeBank, Ron Neal, Stan Presolski, Swante Scholz, Tiago Bruno, Tige Thorman, Warrior8252

Filmed by Paul Gramaglia

Thumbnail by Ignat Berbeci

Animations by Catherine Chooljian

Music from “Tonic Zone” “Betelgeuse” “Insidious Mice” “Seaweed” “It’s not that serious” “Platin00m - Sum It”

This is an educational, scientific video.

Why This Reservoir Is Covered In 96 Million Black Balls

Maybe you've seen that viral video of millions of black balls covering a water reservoir in Los Angeles. But why are they there? Is it really to help out with California drought? Not exactly. Here's the real reason that reservoir is covered in 96 million black balls.

If you were wondering how they even came up with the idea of dumping tens of millions of black balls into the water, you can blame birds. Yes, birds. That's because these Shade Balls were originally known as bird balls, and were deployed by mining companies into polluted ponds and lakes to keep birds from landing there and getting poisoned by the toxic waste. Airports later used the same tactic to keep birds away from runaways, to ensure they didn't get sucked into jet engines.

Watch the video for more about Why This Reservoir Is Covered In 96 Million Black Balls!

#ShadeBalls

This one's for the birds | 0:17
It's not really about the drought | 0:52
The science stuff! | 1:26
Alternative methods | 2:25
But are they fun to play in? | 3:13

Can You Swim in Shade Balls?

I bought 10,000 shade balls and tried to swim in them. They appear to act like a non-Newtonian fluid: rigid under high shear stress, but they flow like a liquid under low shear.
Get a signed shade ball by supporting Veritasium:

Receiving a shade ball:
1. Support Veritasium on any Patreon tier and enter your address
2. In about a month I will send out signed shade balls
3. I will cover all shipping costs but if things get really crazy I will prioritize existing Patreon supporters and higher tiers

My sense was that swimming in shade balls would be difficult but still doable. This was roughly true for the single layer of shade balls. The shade balls slide past each other so they act like a liquid, albeit a viscous one owing to their significant inertia. It's much more intense exercise and it's also annoying to be bombarded with shade balls on all sides of your body, particularly your head. With multi-layer shade balls (as exists on much of LA reservoir) things get significantly more difficult. The balls bunch together and when you try to move through them quickly, they become more rigid, providing significant resistance to motion. This has the benefit that you can lie on them and as long as they stay trapped under you, you can float on them. But a little bit of motion causes them to move around and you sink through quickly.

Huge thanks to:
Jordan Schnabel and Cristian Carretero for filming and swimming and providing lifeguard services.
Raquel Nuno for filming and putting up with me.

Special thanks to Patreon supporters:
Donal Botkin, Michael Krugman, Ron Neal, Stan Presolski, Terrance Shepherd, Penward Rhyme and everyone who provided feedback on an early draft of this video.

Music from Dubstep Mammoth 2 Finally Here (Instrumental) The Last Arrival Sundown Love (Instrumental)

LA throws 96 million 'shade balls' at its water shortage — and it's mesmerizing | Mashable

Los Angeles is throwing shade at its water problem — literally.

The city has deployed a total of 96 million shade balls into the LA Reservoir in an effort to save 300 million gallons of water.

California is currently in the midst of its worst drought on record, and all hands are on deck to conserve the state's precious water supply.

The Los Angeles Department of Water and Power, for its part, is contributing to the effort by rolling out thousands of small, black plastic balls to protect water quality by preventing sunlight-triggered chemical reactions, deterring birds and other wildlife, and protecting water from rain and wind-blown dust, according to a press release from LA Mayor Eric Garcetti.


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'Shade Balls:' What Are They and How Are They Saving Water?

Aug. 17 -- Water managers in Los Angeles are managing drought pressure on city water supplies by covering their major reservoir with 96 million little plastic balls. Xavierc President and Founder Sydney Chase speaks on Market Makers.

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The Making of Why Are 96,000,000 Black Balls on This Reservoir?

Full Episode with Veritasium:
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As seen on The Create Unknown podcast:
Derek Muller of Veritasium talks about the behind-the-scenes process of making his viral science video, Why Are 96,000,000 Black Balls on This Reservoir? At the time of our interview, his video had already amassed over 30 million views, so Kevin from Vsauce2 asked him how he did it. From finding the story about L.A.'s unique reservoir to convincing the county to let him on the boat, we hear about how Veritasium went after a story he thought was interesting, even if not everyone agreed.

Veritasium's video:

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Rate & review this episode on Podchaser:

#TheCreateUnknown #Veritasium
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Why Are 96,000,000 Black Balls on This Reservoir?

आखिर क्यो इस झील मे 96 करोड़ BALLS तैर रही है । Why are 96 Million BALLS On The Reservoir ?। FACTS

Top Random Facts (TRF) Ep #1

Why are 9.6 CRORE BLACK BALLS on this reservoir ?

1. Sesame seeds were once worth more than gold

The people of the Middle Ages prized sesame seeds so highly that they cost more than their weight in gold. They're highly nutritious and tasty but many civilizations thought they also held magical or spiritual properties, bestowing luck and fortune. Now you'll never pick them off your hamburger bun again, right?

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3. Drug lord Pablo Escobar spent $2500 a month on rubber bands to hold all his cash.

It can be hard to imagine how much wealth is generated by the illegal drug trade but the fact that Pablo Escobar had to spend over two grand on rubber bands every month just to keep his money together might help put it in perspective.

4. 10 CRORE Black Balls

The purpose of the balls: to improve water quality and save water. ... The Los AngelesDepartment of Water and Power said the shade balls could keep contaminants out of the water and reduce the evaporation of thereservoir by 85 to 90 percent during a drought.

Unusually high levels of the carcinogen bromate were discovered in the reservoir in October 2007. Bromate occurs when bromide, naturally present in groundwater, and chlorine, used to kill bacteria, react in strong sunlight.

Shade balls were tried on the reservoir as a cheaper alternative to increased chemical treatment. They also provide the added b6enefit of reducing evaporation, which is important during California’s four-year drought.

5. The Tower Melt A Car – Another infamous episode of the grand tower is the “scorchgate” episode. The architectural design of the tower led to the reflection of the sun rays on a Jaguar car near the building which got melted due to the heat of the reflected sunrays. This made the entire tower a laughing stock of the city and the Londoners actually started frying eggs at the place of the solar glare from the tower.

See You Sooooooooooon :)

#DesiYaarIndia #TRF #Facts






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Why are 96,000,000 black plastic balls in this L.A. reservoir?

I took a boat through 96 million black plastic balls on the Los Angeles reservoir to find out why they're there. The first time I heard about shade balls the claim was they reduce evaporation. But it turns out this isn't the only reason they were introduced.

Are Black Orbeez Better than Shade Balls?

I saw the veritasium video about the 96 million shadeballs and wanted to make my own. I planned to use black orbeez that absorb and grow in the water and figured they may do the same thing as the black shadeballs.

Full Orbeez Playlist:

The first time I heard about shade balls the claim was they reduce evaporation. But it turns out this isn't the reason they were introduced.

The original balls are made of high density polyethylene (HDPE) which is less dense than water so they float on the surface of the reservoir even if they break apart. They are 10cm (4 inches) in diameter and contain about 210ml of water. So the main reason they are on the reservoir is to block sunlight from entering the water and triggering a chemical reaction that turns harmless bromide into carcinogenic bromate. This effect occurs with prolonged exposure to bromate so regulators insist that levels be kept below 10 microgram per liter on average over a 12 month period.

However the black orbeez balls are made mostly of 99% water so they sank to the bottom. Instead I decided to order black plastic ball pit balls and they did the job!!

Thanks so much watching and please subscribe!!

Why Are 96,000,000 Black Balls on this Reservoir?

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Things that you DIDNT know about SHADE BALLS | BLACK BALLS !! 4K

Shade balls.
What are they? A new sport? Or a new ball added to the rainbow color ball pits?
Jokes aside, shade balls are used to to cover reservoirs. Sounds unbelievable and crazy but you’ll be shocked as these are already being practiced around in the US.
Do watch this video to know more about shade balls. What’s their purpose? Are they environment and health friendly?
If you like our videos, give us a like and subscribe to our channel, Because It's Interesting, and Don't forget to share !!

Why are 96,000,000 balls in reservoir? ||Black Balls in Lakes Reasons

Why are 96,000,000 balls in reservoir? ||Black Balls in Lakes Reasons

Veritasium's latest shade balls video is clickbait

PLEASE WATCH IN FULL BEFORE YOU ATTACK ME: In this video I talk about the success of Veritasium's video Why Are 96,000,000 Black Balls on This Reservoir? and why his latest follow-on video is pure clickbait. I also show off my new haircut.
First shade balls video:
Newest shae balls video:
#Veritasium #ShadeBalls #BlackBalls
The balls picture in the thumbnail has been adapted from an image by Harald Bischoff (Licence:
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Please watch: How much money do I earn from YouTube with 30k subs

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How many balls does it take to fill a reservoir?

These black balls are playing a big part helping Los Angeles, California, conserve water during the drought. They're also improving water quality. Amaze-balls! For more information please visit

These Black Plastic Balls Are Saving the Earth’s Water

Shade balls have a long term goal of saving millions of gallons of water!

For more, visit

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