Have you ever used a telescope? Most people think of telescopes only as something that you use to look at the stars in the sky, but if you have ever looked through a camera lens or used a pair of binoculars, you have used a telescope.
Telescopes have been around for a long time. We know for sure that people used them in the 1600's in Europe. Some people even think that people in other parts of the world were using telescopes thousands of years ago.
Telescopes make things that are far away look closer and brighter. It isn't magic. It's science. When light moves through different things, like air, a lens or water, it slows down or speeds up. At the place where this happens, to our eyes, it looks like the things we see are split in two.
PHOTO: AP
You can see for yourself. Put a pencil in a glass or bowl of water. Make sure it's slanted, and then look to see how it looks like the pencil is split in two where the water meets the air.
Long ago, scientists learned that light does this, and figured out how to use this fact to build a telescope.(Kayleen Hartman, Staff Writer)
你用過單筒望遠鏡嗎?大多數的人認為單筒望遠鏡不過是用以觀察天際星群的工具而已,不過,假如你曾透過相機鏡頭看東西,或用過雙筒望遠鏡,你就是用過單筒望遠鏡。
單筒望遠鏡的歷史悠久。我們確定的是,十七世紀的歐洲人已使用望遠鏡。甚至有人認為早在數千年以前,世上其他地方就已有人使用望遠鏡。
單筒望遠鏡讓遠處的東西看起來較近、較亮。這不是魔術,是科學的緣故。光穿過不同物質,像是空氣、鏡片或水時,就會減慢或加速,這時候,從我們眼裡看起來那個東西就宛似變成了兩半。
你可以自己試試看。在一杯水或一碗水中放入一隻鉛筆,確定鉛筆是斜放的,再看看水與空氣接觸的地方,鉛筆看起來就像是斷裂成兩半。
科學家很久以前就知道這是光線的緣故,於是想出了利用這個原理來製造望遠鏡的方法。 (翻譯︰賴美君)
The strongest earthquake to hit Taiwan in 25 years killed at least 16 people and damaged dozens of buildings, but the destruction was largely contained thanks to decades of preparedness work. Taiwan sits on the “Ring of Fire,” an arc of intense seismic activity along the Pacific Rim, and — much like neighboring Japan — has a long history of catastrophic quakes. How does April 3 compare with other recent quakes? The April 3 earthquake, which measured 7.4 on the moment magnitude scale, was felt across Taiwan. It was the most severe since a 7.6 magnitude quake in 1999 killed
A: Artificial intelligence technology has been causing controversy lately: a student was caught cheating with AI to win the grand prize in an art contest. B: That’s so absurd. Does this mean that AI paints better than humans? A: Maybe. Luckily, the student was later disqualified. B: And more absurdly, it’s becoming more and more popular to use AI technology to “resurrect” people. A: Yeah, some netizens even posted videos featuring the late singer CoCo Lee, who was “resurrected” by them with AI software. A: 人工智慧的爭議不斷,有學生違規使用AI參加美術展,甚至贏得首獎。 B: 真誇張,這是不是代表AI比人類還強大? A: 或許吧,幸好得獎資格被取消。 B: 還有更誇張的︰讓死者重現的「AI復活」技術越來越熱門。 A: 對啊,還有網友製作已故歌后李玟「復活」的影片呢! (By Eddy Chang, Taipei Times/台北時報張聖恩)
Around the time of the Dragon Boat Festival in June, the streets of Taiwan are filled with the delightful aroma of zongzi, a traditional snack made of sticky rice wrapped in leaves. The leaves are folded into a cone and then filled with sticky rice and other ingredients such as braised pork belly, peanuts and salted duck egg yolks. The filled leaves are then tightly tied with kitchen twine and ready for cooking. 每到六月端午時節,街頭巷尾就會飄出粽子的香氣。粽子是將糯米包進粽葉的傳統美食,先將粽葉折成圓錐狀塞入糯米,以及紅燒肉、花生、鹹鴨蛋黃等配料,用棉線綁緊後即可烹煮。 Dragon Boat Festival (n. phr.) 端午節 aroma
Everyone has seen a piece of fruit turn brown after being cut. Have you ever wondered why that happens? It is a common phenomenon that occurs due to a chemical reaction called enzymatic browning. The appearance, flavor and nutritional value of the fruit are all affected by this reaction. Some fruits, such as apples, pears, bananas, avocados and peaches, are more prone to enzymatic browning than others. These fruits contain high levels of an enzyme called polyphenol oxidase, or PPO for short. __1__ This causes a chain of chemical reactions that ultimately transforms the phenolic compounds into