Read the passage and do the tasks that follow.
Li-Fi Technology
Li-Fi technology is a new technology that transmits signals as light instead of radio waves. In urban areas where Wi-Fi networks become congested and there is a lot of noise in the signals, this technology is something that can be of immense use to an individual. The basic requirement of this technology is the available of light!
Light is also an electromagnetic wave like radio waves. The only difference is that the former has the ability to transmit data almost ten thousand times faster than latter! The basic process is quite simple to understand. An LED light bulb, any one at all, can be flicked on and off in order to be able to generate signals. A light sensor on a device picks up the digital information sent by the LED, which enables it to be processed by a computer.
The question is whether anyone wants to go through the annoying experience of sitting under a flickering light bulb. This is the interesting part. The technology is focusing on make sure that the light bulb is flickered up to billions of times a second! At that rate, the human eye simply cannot notice the light bulb being flicked on and off.
However, everything comes with a disadvantage. The major disadvantage here is the fact that these signals cannot penetrate walls. So if you want to move from one room to another, you will need to have a wired bulb present in that room as well.
An Estonian startup company called Velmenni took the technology out of the laboratories and brought it into the real-world offices, and industrial environments in Tallinn for the first time.
Overall, this sounds like quite a development in the field of communication technology.
No one wants to go through the annoying experience of sitting under a flicking light bulb.
Hãy suy nghĩ và trả lời câu hỏi trước khi xem đáp án
Lời giải:
Báo saiNo one wants to go through the annoying experience of sitting under a flicking light bulb. (Không ai muốn trải qua cảm giác khó chịu khi ngồi dưới bóng đèn nhấp nháy.)
Thông tin: The question is whether anyone wants to go through the annoying experience of sitting under a flickering light bulb. This is the interesting part. The technology is focusing on make sure that the light bulb is flickered up to billions of times a second! At that rate, the human eye simply cannot notice the light bulb being flicked on and off.
Tạm dịch: Câu hỏi đặt ra là có ai muốn trải qua cảm giác khó chịu khi ngồi dưới bóng đèn nhấp nháy không. Đây là phần thú vị. Công nghệ đang tập trung vào việc đảm bảo rằng bóng đèn được nhấp nháy lên đến hàng tỷ lần một giây! Với tốc độ đó, mắt người chỉ đơn giản là không thể nhận thấy bóng đèn đang bật và tắt.
=> False