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，几乎每个人都用wifi。无论是网上搜索还是游戏wifi都是非常方便的。下面的这些文字告诉你或许不知道的wifi的事情。

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

谷歌拟建全球城市免费Wifi纽约试点

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.

我们再也不用为了获得渣速的无线互联网连接而花钱买难喝的咖啡了。目前，谷歌向纽约全市提供免费公共WiFi，而这只是试水，谷歌意图将该计划覆盖全球。这家互联网巨头为了完成这一计划甚至还成立了专门的公司，名字就叫人行道实验室（ 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.

你或许会问，谷歌要如何完成这一计划？他们的做法是把纽约市里多达1万个的老旧电话亭改装成带数字面板和大型广告牌的“柱子”，这些“柱子”将为附近一定范围内的区域提供免费WiFi。这些改装后的“柱子”，其功能还包括免费手机充电、拨打市内电话、上网，以及获取本地服务和信息等。根据彭博社新闻报道，这些“柱子”将于今秋入驻纽约全市。

How to Boost Your Wifi Signal

如何提升Wifi勺信号强度

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.

如果你的无线网络信号很弱，你可能会想要知道为什么。不仅如此，你可能还会想知道如何解决这个问题。以下就是我们的建议。

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.

解決问题的关键在于增强信号和减少干扰。手机和微波炉之类的装置很显然是干扰源，如果可以，把无线路由器放在远离这些东西的地方。

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.

金属表面也会干扰无线信号，所以尽量避免大型金属表面出现在无线局域网附近。无线通常有一个质量不太好的内置wifi天线，向所有方向辐射信号，通常称为全向天线。全向天线在所有方向上产生恒定磁场强度。

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.

这些天线信号随着距离增加而减弱，这是由于受到全向模式下源信号功率减弱的影响。在信号离开信号源继续传播途中，信号强度开始逐渐减弱。

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.

有时，用全向天线取代路由器内置的天线效果会更好。但是安全问题也会随之而来，因为增强的信号意味着您的网络将提供给更多的人。所以，既增强信号又安全的做法是使用一个高增益定向天线，將发出一个强烈的信号，朝着一个特定的方向。

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.

投射到特定区域的信号控制起来更加容易。商用天线或反射镜都可以实现这一目标，但我们将向您展示一个更有趣的和免费的抛物面反射器。有很多方法可以做到这一点，最简单的是锡纸覆盖的盘子。

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.

把盘子放在wifi天线后面，朝向您希望的信号辐射位置。另一个非常著名的辐射你的无线信号的方式是使用简单的品客薯片包。将空品客薯片包放在天线的前面。我在包装袋上弄了一个洞，这样信号在这个方向上就会变强。不但空的品客薯片包可以增强wifi信号，空的啤酒罐也有这样的功能。下面就教你如何制作。

Boostour Wifi Signal Using Only a Beer Can

用啤酒罐就能增强Wifi信号

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.

我喜欢做一些有意思的小玩意儿，特别是那些我能自己动手做出来的。这个简单的wifi信号强化装置就是如此。它能增加wifi的强度至少2-4格。现在我先把啤酒喝干净。

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？

這些装置毫无疑问都经得起检验，但是最重要的问题是选择什么样的啤酒瓶子？

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.

对于这个简单的装置，需要剪刀、美工刀、粘合胶和一个空啤酒罐，多了也没用。

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，最好是蓝带啤酒，如果是塑料瓶装的，赶紧换一个去。

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

啤酒罐干了之后，去掉拉环。

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.

用美工刀切掉开口端，剪开罐身，再将底端切割成部分相连的形状。

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！

现在是最后一步了。只要把你的啤酒罐模型连接到路由器上——如果没有什么要修改的，你就拥有了自己的啤酒罐路由器。