Have you ever noticed how a slick of oil on a puddle can have a rainbow of colors? This week we're going to make our own colorful oil slicks.
What you will need:
a black bowl (or a bowl with the inside covered in black paper)
PHOTO: MICHAEL KEARNEY, TAIPEI TIMES
a sink
a desk lamp (optional)
various kinds of oil (note that sesame oil works well)
toothpicks
rubber bands
▲ Fill the bowl with water and leave a thin stream of water slowly running over the bowl. This will help clean away the oil. Make sure that the stream is thin enough that no waves are created.
▲ Shine the light on the ceiling above the sink. If the room is very bright, this won't be necessary.
▲ Dip the end of a toothpick into the oil. Now add a drop of oil to the water. The oil will form a thin film on top of the water. Watch how the light reflects off the oil slick. Try looking at it from different angles.
▲ Try using different types of oil. Some work better than others. Use a different toothpick for each type of oil.
▲ Try floating a rubber band on top of the water. Add a drop of oil to the middle of the rubber band. Wait a few seconds and then lift up one end of the rubber band.
▲ Try adding two oil drops and see how they interact.(MICHAEL KEARNEY, STAFF WRITER)
你曾經注意過地面上的漂有浮油的水面會反映出彩虹般的色彩嗎?本週我們要來自製七彩繽紛的水面浮油。
所需材料︰
一個黑色的碗(或是在有顏色的碗上舖一層黑紙)
水槽
一盞桌燈
多種不同種類的油(麻油的效果尤佳)
牙籤
橡皮筋
▲ 將碗中裝滿水,並讓保持微弱水量持續流入碗中,這樣可以讓油流走,注意水要開得夠小才不會在水面上產生波紋。
▲ 將燈光對著水槽上方的牆壁打。如果房間已經很亮了,可以省略這個步驟。
▲ 用牙籤末端浸入油中,用牙籤在水中點一滴油,油會在水面上形成一層薄膜,注意觀察浮油在燈光下的變化。
▲ 嘗試用不同種類的油實驗,有些效果比較好,每換一種油就要換一根牙籤喔。
▲ 放一根橡皮筋在水面上,然後在橡皮筋中間輕點一滴油,數秒後,挑起橡皮筋一端。
▲ 加入兩滴油,看看他們會怎麼互相作用。
(翻譯︰袁星塵)
A: Have you seen the reality TV show “Culinary Class Wars?” B: Sure! It’s a competition between two classes: 20 celebrity chefs dubbed the “white spoons” versus 80 non-celebrity chefs dubbed the “black spoons.” A: The two judges are master chef, Paik Jong-won, and South Korea’s only three-Michelin-star chef, Anh Sung-jae. B: And the grand prize is $300 million Korean won. A: After watching the show, I really wanna have some Korean food. A: 你有看電視實境秀《黑白大廚:料理階級大戰》嗎? B: 當然啦!就是20位「白湯匙」名廚,和80位「黑湯匙」廚師的競賽。 A: 評審則是廚神白種元,及南韓唯一的米其林三星主廚安成宰。 B: 冠軍還可獲得3億韓元獎金呢! A: 看完節目後我現在好想吃韓式料理喔。 (By Eddy Chang, Taipei Times/台北時報張聖恩)
A: As reality TV show “Culinary Class Wars” causes a sensation, it may be more difficult to make a reservation at the show’s judge Paik Jong-won’s Taipei restaurant, Bornga Korean BBQ. B: The other judge, Anh Sung-jae, also served as a guest chef at Regent Taipei last June. A: Korean food has become a new trend in Taiwan lately, and restaurants such as Samwon Garden are quite popular. B: But that restaurant is so pricey. A: Then try the more affordable places, like my favorite, OKAY Korean BBQ, or others such as Annyeong Korean BBQ and OvenMaru Chicken. A:
Colorado has taken a pioneering move towards protecting consumer privacy in the age of brain-computer interfaces. With the rise of neurotechnology, which involves technology that monitors and interacts with the brain, data privacy concerns are coming to a head. In response to growing anxieties, Colorado has become the first state in the US to pass an amendment that safeguards the privacy of human brainwaves. On April 17, Colorado announced an update to its Privacy Act, which went into effect on August 6. The new Colorado Privacy Act classifies brainwaves as “sensitive personal information,” offering them the same protections that
Continued from yesterday(延續自昨日) https://www.taipeitimes.com/News/lang Neurotechnology used to be limited to scientific labs and hospital settings. However, many new devices that can record consumers’ brainwaves or analyze the brain in other ways have been launched in recent years. Often marketed outside the realm of medical equipment, these devices evade the existing safety and privacy standards for healthcare devices. Experts are raising concerns about this lack of oversight, fearing the potential for these tools to become mind-reading devices without users’ consent or knowledge. Other US states are considering similar regulations to protect their citizens in regard to neuro data gathered by technology companies. Colorado’s