light
noun/laɪt/[laɪt]- 1.
ánh, ánh sáng
Electromagnetic radiation in the wavelength range visible to the human eye (about 400–750 nanometers): visible light.
- As you can see, this spacious dining-room gets a lot of light in the mornings.
- Then came a maid with hand-bag and shawls, and after her a tall young lady. She stood for a moment holding her skirt above the grimy steps,[…], and the light of the reflector fell full upon her.
- 2.
ánh sáng
Electromagnetic radiation in the wavelength range visible to the human eye or in nearby ranges (infrared or ultraviolet radiation).
⚠ Từ 'ánh sáng' cũng được dùng cho các cảm nhận về độ sáng nói chung, nhưng trong ngữ cảnh vật lý này nó chỉ bức xạ điện từ.
ℹ Trong tiếng Việt, 'ánh sáng' là danh từ không đếm được, không cần dùng loại từ đi kèm.
- black light
- Sunlight shines through the window into the room.Ánh sáng mặt trời chiếu qua cửa sổ vào phòng.
- 3.
bức xạ điện từ
Electromagnetic radiation of any wavelength.
ℹ Trong ngữ cảnh khoa học, 'bức xạ điện từ' được dùng để chỉ toàn bộ dải sóng, không chỉ riêng ánh sáng mà mắt người có thể nhìn thấy.
- It’s everywhere. At this moment, as you sit quietly reading this book, you are awash in it. At work, it’s emanating from your electronic devices; step outside for lunch, and the sun bathes you in it. You may receive an extra dose of it when you visit your doctor, pass through security at the airport, or drive through city streets, but minuscule amounts of it are with you always. You cannot see, hear, smell, or feel it, but there is never a single second when it is not flying through your body. Too much of it will kill you, but without it you wouldn’t live a year. “Invisible light” seems like a contradiction. Like Simon and Garfunkel’s “The Sound of Silence,” it’s an oxymoron. We think of light, by definition, as something seen, something that enables our seeing, illuminating the darkness. Unlike dogs, who sniff in order to “get” what an object is, we depend on vision above all our other senses. We rely on light to tell us about our surroundings. But just as there are frequencies of sound audible to other animals that we cannot hear, there is a whole world of light outside our range of vision, a world that is humming with activity. Though we rarely think about this invisible world, our way of life depends on it. It’s because of invisible light that you can do things such as send a text message, use GPS to find your way to a friend’s house, listen to the radio, or microwave a frozen pizza. Invisible light shows us things we would never otherwise see, including our own skeletons and brains and the history of our universe. I was reminded of just how much we rely on invisible light, and how mysterious it remains to us, during a visit from my sister and her family. It was a lazy summer afternoon, and we were sprawled across a few couches sharing a bowl of popcorn. My niece, her shoulders crimson after a day outdoors, was chatting on her cell phone, holding up a promising finger to her mother, who was scolding her for not using sunscreen. My brother-in-law, meanwhile, was asking my opinion on an article he’d read proposing that Wi-Fi be banned in schools because of its dangers. We were all depending on invisible light (for the microwave popcorn, the cell-phone service) while being concerned that it might harm us (sunburn, mysterious Wi-Fi health threats) and confused about what to do to protect ourselves. We need it, and it surrounds us, yet we remain uneasy about living with invisible light, partly because we fear what is unknown. After all, most of us don’t know much about “all the light we cannot see.” This book aims to change that. My hope is to expose the hidden side of the spectrum, to make the invisible (at least temporarily) visible and vivid to you.
- Our electronic devices are constantly emitting electromagnetic radiation.Các thiết bị điện tử của chúng ta liên tục phát ra bức xạ điện từ.
- 4.
đèn
A source of illumination.
- Put that light out!
- And the light ſhineth in darkneſſe, and the darkneſſe compꝛehended it not.
- 5.
đèn
A source of illumination.
⚠ Học sinh hay nhầm lẫn giữa 'ánh sáng' (light in general) và 'đèn' (a light source). Viết 'tắt hết ánh sáng' khi muốn nói tắt đèn là không tự nhiên; đúng phải là 'tắt hết đèn'.
ℹ Trong tiếng Việt, 'đèn' dùng để chỉ thiết bị phát sáng, trong khi 'ánh sáng' chỉ hiện tượng vật lý.
- We turned off all the lights and went to sleep.
- The ceiling lights were off, but I knew the narrow light spilling from the lamp on my bureau would be enough for her to see the pale red marks on my chest, which had been fading for so long they had gone back to being shiny again.
- 6.
đèn giao thông
A source of illumination.
⚠ Học sinh hay nhầm lẫn khi chỉ dùng 'đèn' trong ngữ cảnh giao thông; đúng phải là 'đèn giao thông' để tránh hiểu nhầm là bóng đèn thắp sáng.
ℹ Trong tiếng Việt, từ 'đèn' thường chỉ các vật dụng thắp sáng trong nhà. Đối với các thiết bị tín hiệu trên đường, cần thêm từ 'giao thông' để làm rõ nghĩa.
- To get to our house, turn right at the third light.
- To get to our house, turn right at the third light.Để đến nhà tôi, bạn hãy rẽ phải ở đèn giao thông thứ ba.
- 7.
góc độ, cách, trạng thái
A point of view, or aspect from which a concept, person or thing is regarded.
ℹ Từ 'góc độ' thường đi kèm với giới từ 'dưới' hoặc 'từ' để diễn tả quan điểm hoặc cách nhìn nhận.
- I'm really seeing you in a different light today.
- Magoon's governorship in Cuba was viewed in a negative light by many Cuban historians for years thereafter.
- 8.
lửa
A flame or something used to create fire.
- "There will, I expect, be many such - possibly whole cities in flames - when we consider how many folk may have dropped with lights in their hands."