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이 페이지는 Youtop이 운영하는 독립 디렉터리 페이지입니다. Veritasium 또는 YouTube가 운영, 후원, 보증하지 않습니다. 수정 제안하기. 이 크리에이터 본인이신가요? 페이지 소유 신청
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이 페이지는 Youtop이 운영하는 독립 디렉터리 페이지입니다. Veritasium 또는 YouTube가 운영, 후원, 보증하지 않습니다. 수정 제안하기. 이 크리에이터 본인이신가요? 페이지 소유 신청
Veritasium · 2019년 5월 10일 게시
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. In 2025, we launched the Elements of Truth game on Kickstarter and were thrilled by the response. We’re now in the final stages of production, with Kickstarter rewards shipping soon. If you missed the campaign, you can now pre-order the retail edition through our new website here - https://ve42.co/SBRes 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 our Patreon supporters! Join this community to help us keep our videos free, forever: https://ve42.co/PatreonDEB 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 http://epidemicsound.com "Colorful Animation 4" "Seaweed" And from Kevin MacLeod "Marty Gots a Plan" This is an educational video about the science of water quality.
