你不知道的Wifi

In our daily life， almost everybody uses wifi. Wifi is really convenient for us to either search on line or play the online games. The following passages tell you something you may not know about wifi.

日常生活中，幾乎每個人都用wifi。無論是網上搜索還是游戲wifi都是非常方便的。下面的這些文字告訴你或許不知道的wifi的事情。

To Span across the Whole of the World Google Roll Out Free Wifi in New York

谷歌擬建全球城市免費Wifi紐約試點

No longer will we have to buy an over priced coffee to get a rubbish wireless internet connection. Google is rolling out free wifi in New York as part of a triall the company hopes will eventually span across the whole of the world. The internet giant has even gone as far as to setup a company specifically dedicated to the task， called Sidewalk Labs.

我們再也不用為了獲得渣速的無線互聯(lián)網連接而花錢買難喝的咖啡了。目前，谷歌向紐約全市提供免費公共WiFi，而這只是試水，谷歌意圖將該計劃覆蓋全球。這家互聯(lián)網巨頭為了完成這一計劃甚至還成立了專門的公司，名字就叫人行道實驗室（ Sidewalk Labs）。

How will they do this you ask-through turning 10，000 of the big apples old phone booths into ad-supported“Wi-Fi pylons”. These converted booths are also intended to provide cell-phone charging， free domestic phone calls and a touch screen information hub about the city and transitdirections. According to Bloomberg News， these“pylons”will be rolled out across New York this autumn.

你或許會問，谷歌要如何完成這一計劃？他們的做法是把紐約市里多達1萬個的老舊電話亭改裝成帶數(shù)字面板和大型廣告牌的“柱子”，這些“柱子”將為附近一定范圍內的區(qū)域提供免費WiFi。這些改裝后的“柱子”，其功能還包括免費手機充電、撥打市內電話、上網，以及獲取本地服務和信息等。根據彭博社新聞報道，這些“柱子”將于今秋入駐紐約全市。

How to Boost Your Wifi Signal

如何提升Wifi勺信號強度

If you often notice a weak signal from your wireless network， you might want to know why. Other than that， you also want to know how to solve it. Heres what you can do.

如果你的無線網絡信號很弱，你可能會想要知道為什么。不僅如此，你可能還會想知道如何解決這個問題。以下就是我們的建議。

The key to solving weak reception is higher signal strength and less network noise. Certaindevices such as cordless phones and microwaves are obvious generators of wireless network noise. So if its all possible， keep your router as far away from these other devices and other things that could interfere.

解決問題的關鍵在于增強信號和減少干擾。手機和微波爐之類的裝置很顯然是干擾源，如果可以，把無線路由器放在遠離這些東西的地方。

Metallic surfaces also interfere with wireless signal so try to avoid having large metallic surfaces near your wireless LAN. Wireless normally have a poor quality built-in wifi antenna that radiates signal equally well in both directions， usually referred to as omnidirectional. Anomnidirectional antenna is an antenna that produces constant field strength in all directions.

金屬表面也會干擾無線信號，所以盡量避免大型金屬表面出現(xiàn)在無線局域網附近。無線通常有一個質量不太好的內置wifi天線，向所有方向輻射信號，通常稱為全向天線。全向天線在所有方向上產生恒定磁場強度。

These antennas can be weak over longer distances. This is due to interference of the sourcesignalling power it radiates in all directions. As the signal continues to travel away from its source， the signal strength begins to grow weaker.

這些天線信號隨著距離增加而減弱，這是由于受到全向模式下源信號功率減弱的影響。在信號離開信號源繼續(xù)傳播途中，信號強度開始逐漸減弱。

Sometimes， it is better to replace the routers poor quality built-in antenna with a stronger omnidirectional antenna such as this one. There are some security concerns around these omnidirectional signals， in that the increased power means that your network will be available tomore people. So， a some what safer choice for increased range is to use a high gain directional antenna that will send a strong signal in a specific direction.

有時，用全向天線取代路由器內置的天線效果會更好。但是安全問題也會隨之而來，因為增強的信號意味著您的網絡將提供給更多的人。所以，既增強信號又安全的做法是使用一個高增益定向天線，將發(fā)出一個強烈的信號，朝著一個特定的方向。

The focused signal will allow better control by aiming the signal towards the desired location. You can buy commercially available antenna or reflectors but were going to show you a morefun and free way to make a parabolic reflector. So， there are many ways to do this， the simplest being a dish covered in tin foil such as this one.

投射到特定區(qū)域的信號控制起來更加容易。商用天線或反射鏡都可以實現(xiàn)這一目標，但我們將向您展示一個更有趣的和免費的拋物面反射器。有很多方法可以做到這一點，最簡單的是錫紙覆蓋的盤子。

Place the dish behind the wifi antenna pointing towards the location you want the signal to radiate to. Another very well-known way to radiate your wireless signal is to use the humble Pringles packet. Place the hollowed out Pringles in front of the antenna. You can see Ive madea hole in the Pringles packet. The wifi signal will then be strengthened in the direction that the packet is pointing. Not only can the Pringles packet boost the wifi signal but an empty beer can have the same function. The following passage teaches you how to make it.

把盤子放在wifi天線后面，朝向您希望的信號輻射位置。另一個非常著名的輻射你的無線信號的方式是使用簡單的品客薯片包。將空品客薯片包放在天線的前面。我在包裝袋上弄了一個洞，這樣信號在這個方向上就會變強。不但空的品客薯片包可以增強wifi信號，空的啤酒罐也有這樣的功能。下面就教你如何制作。

Boostour Wifi Signal Using Only a Beer Can

用啤酒罐就能增強Wifi信號

I love a good hack， especially one that requires me to throw back a cold one before hand （orduring）. This simple wifi boost has actually been shown to increase signal strength by at least 2 to 4 bars. And， well， I will drink to that.

我喜歡做一些有意思的小玩意兒，特別是那些我能自己動手做出來的。這個簡單的wifi信號強化裝置就是如此。它能增加wifi的強度至少2-4格?，F(xiàn)在我先把啤酒喝干凈。

These instructions came to us via WiFi How and we think they are most definitely worth checking out. But here is the most important question： what kind of beer will you use？

這些裝置毫無疑問都經得起檢驗，但是最重要的問題是選擇什么樣的啤酒瓶子？

For this project you are going to need scissors， a utility knife， some adhesive putty and anempty beer can. More than one empty beer can is acceptable but dont kid yourself， the routeronly needs the one.

對于這個簡單的裝置，需要剪刀、美工刀、粘合膠和一個空啤酒罐，多了也沒用。

The first step is to wash out your empty beer can， unless of course said beer is a can of Pabst Blue Ribbon. If it is PBR， promptly go drink a better beer. You really should be ashamed of yourself.

第一步是清洗啤酒罐，最好是藍帶啤酒，如果是塑料瓶裝的，趕緊換一個去。

Once the can has dried， you will want to remove its pull tab.

啤酒罐干了之后，去掉拉環(huán)。

Only perform this next step if you have not been drinking. Using the utility knife， saw of the bottom of the can. Chances are your can will not have a red dotted line. If you see one， put down the knife…youve had too much beer.

用美工刀切掉開口端，剪開罐身，再將底端切割成部分相連的形狀。

Its the home stretch！ You just need to attach your molded beer can to the wifi router. Hopefully no other parts of the can have actually grown back. You now have beer-fi！

現(xiàn)在是最后一步了。只要把你的啤酒罐模型連接到路由器上——如果沒有什么要修改的，你就擁有了自己的啤酒罐路由器。