歡迎閱讀《週日科學版》！在暑假期間，我們每週日都要為你介紹可以在家中進行的有趣科學實驗。你可以在《科學日誌》中記錄自己做了哪些活動，這樣就可以將所學的紀錄下來，比較這些結果，也許還可以利用它們來設計新的實驗！先看一下《科學日誌》的點子再開始吧。展開實驗之前，記得要獲得大人許可喔！
Everyone knows that bubbles are great fun. But have you ever seen an anti-bubble? This week we're going to show how to create anti-bubbles. This experiment is best done by a well-lit sink. It will be best if you read "What's the Science" before you try the experiment.
What you will need:
A large jar
A bowl
Water
Dish detergent
A chopstick (for stirring)
A pippette (bigger is better), or the pump/chamber from a syringe (get the chemist to remove and dispose of the needle for you). An empty, clean squeezy plastic bottle would work too.
Food coloring (optional)
▲ Fill the jar with cold tap water.
▲ Add several squirts of dish detergent.
▲ Stir the solution gently.
▲ Put some warm water in a bowl and add a couple of squirts of dish detergent. If you are going to use food coloring add a drop now. Stir gently.
▲ Take the pippette and squeeze out as much air as you can.
▲ Place the end of the pippette in the water in the bowl, release your grip and let it fill with water. Put the pippette aside.
▲ Very gently pour a little extra water into the jar. You don't want to make any soap bubbles! The jar should overflow.
▲ Take the pippette and hold it just above the surface of the water in the jar. Gently squeeze the pippette. Keep practicing until you are making little drops of water that skate across the surface.
▲ When you have got the knack of making the skating drops, try following the gentle squeeze which makes a skating drop with a slightly stronger squeeze. This should make the drop go under the surface to make an antibubble. Be patient, making antibubbles takes practice! (catherine Thomas, staff writer)
大家都知道泡泡很好玩，但是你曾看過「反泡泡」嗎？本週我們要教你如何製造「反泡泡」，這個實驗需要一個光線足夠的水槽，而且你最好先看過今天的「科學原理」再開始實驗唷。
所需材料︰
一個大寬口瓶
一個碗
水
洗碗精
一枝筷子（攪拌用）
一支滴管（越大越好）或注射針筒的壓頭和筒身部分（請藥劑師幫你拿掉針頭並加以丟棄）。也可用一個可以擠壓的塑膠空瓶代替。
食用色素（可有可無）
▲ 在瓶中裝滿自來水。
▲ 加入數滴洗碗精。
▲ 輕輕攪拌溶液。
▲ 在碗中裝入一些溫水，加入幾滴洗碗精。若你準備了食用色素，現在可以加入一滴，然後輕輕攪拌。
▲ 拿起滴管，盡可能將滴管中的空氣擠出。
▲ 將滴管尾端放到裝溫水的碗中，將緊握的手鬆開一點，讓滴管吸滿水後，置於一旁備用。
▲ 非常輕柔地再加一些水到瓶中，注意不要讓瓶中產生肥皂泡！讓瓶子的水滿到溢出來。
▲ 拿起滴管，將其尾端置於瓶口的水面上方。輕輕地擠壓空氣頭，多做練習，直到你擠出的小水滴能夠滑過水面。
▲ 當你抓到如何做出滑行水滴的訣竅後，試著稍微用力一點點擠壓滴管，擠出來的水滴應該會沉到水面下，如此就成功做出「反泡泡」囉！要有耐心、多練習才能製作出「反泡泡」！（翻譯：袁星塵）
Historians are rethinking the way the Holocaust is being presented in museums as the world marks the 80th anniversary of the liberation of the last Nazi concentration camps this month. Shocking images of the mass killings of Jews were “used massively at the end of World War II to show the violence of the Nazis,” historian Tal Bruttmann, a specialist on the Holocaust, told AFP. But in doing so “we kind of lost sight of the fact that is not normal to show” such graphic scenes of mass murder, of people being humiliated and dehumanized, he said. Up to this
When people listen to music today, they typically use streaming services like YouTube or Spotify. However, traditional formats like vinyl records have regained popularity in recent times. Vinyl records are circular discs that store music in grooves on their surfaces and are played on a turntable. As the turntable’s needle runs along these grooves, it picks up vibrations and translates them into sound. The history of vinyl records dates back to the late 1800s, but material and technological challenges delayed mass production until the 1950s. Despite early versions having short playtimes and poor sound quality, vinyl records introduced a new era
A: Brazilian jiu-jitsu, known as “BJJ,” has become more and more popular. Even Hollywood stars like Halle Berry and Tom Hardy are obsessed with it. B: Some Asian stars, such as Taiwanese actor Eddie Peng and South Korean actor Lee Joon-gi, have also practiced this martial art. A: BJJ is not just a martial art, but also a combat sport. B: I’ve always wanted to try it, but I’m worried about getting injured. A: Diana Wang, a US doctor of physical therapy, is holding a BJJ seminar at PMA Brazilian Jiu-jitsu in Taipei Friday night. Let’s go check out how we
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