Searching for Two A Days搜索2 1天

If you have ever looked for info on the TV show “Two A Days”, then you will undoubtedly have如果您有任何时候都找信息，电视节目“两个1天” ，那么你无疑将有 Googled googled it.它。 And, you will have found the show’s MTV page, its Wikipedia entry and the tv.com site discussing the show.和，你会发现显示的MTV在网页上，其文字的入口和tv.com网站的讨论显示。

But, what on earth, you may ask is that Google calculator entry that appears above the results?但是，什么地球上，你可能会问，是Google的计算器进入出现上述结果呢？

“two a days = 2.31481481 × 10-5 hertz” “两个1天= 2.31481481 ã - 10月5日赫兹”

It has to be some kind of Google “joke” right?它必须是某种形式的Google “的笑话”的权利？ Well, here’s the skinny and we are not talking latte:那么，这里的瘦和我们现在谈的不是拿铁：

Hertz (Hz) is the unit of frequency in “per seconds”, the reciprocal of time.赫兹（ Hz ） ，是该单位的频率在“每秒” ，相互的时间。 One per second equals 1 Hz.一每秒等于1赫兹。 There are usually 86400 seconds in a day, so “two a day” would be 2 divided by 86400 in hertz.有通常86400秒在某一天，所以“两节” ，将2除以在86400赫兹。 Which is 2.31481481 × 10 ^-5这是2.31481481 ã - 10 ^-5

Obvious when you know how!很明显，当你知道如何！ What Google fails to do with its calculator is recognize that this number is not an irrational number like什么样的Google未能做到与它的计算器是承认，这个数字是不是一个理性的数目一样， pi有价证券投资 and does not stretch out to an infinity of decimal places with no apparent pattern.和不舒展，以一个无限的小数位没有明显的模式。 Instead 2/86400 is a rational number that could be converted into a fraction (It is 2/86400 or 1/43200).而不是2 / 86400是一个理性的数目，可转化为一小部分（ 2 / 86400或1 / 43200 ） 。 After the first decimal place (which is a “3″) the 148″ repeats ad infinitum .后的第一小数位（这是一个“ 3 ” ） 148 “ 无限重复的广告 。

So, why does this calculation show up when you type in the TV show name “Two a Days”.那么，为何这是否计算表明，当您键入的电视节目名称为“两个1天” 。 It’s either a joke, or more likely Google’s calculator algorithm spots the units of days, sees a number next to it and the letter “a” and assumes you want an answer.它的要么是一个笑话，或更可能是Google的计算器算法点的单位内，看到了一些它旁边的和字母“ A ”和假设您想要一个答案。 Try it with “three a week” and you will also get an answer “4.96031746 × 10-6 hertz”.尝试它与“三个有一个星期” ，你也将获得一个答案“ 4.96031746 ã - 10-6赫兹” 。 “100 an hour = 0.0277777778 hertz”, you get the picture. “ 100 1小时= 0.0277777778赫兹” ，您就获得了图片。 Similarly, type in “pound a kilogram” and you get a conversion factor: “1 pound a kilogram = 0.45359237″ and vice versa “1 kilogram a pound = 2.20462262″ and so on.同样地，类型，在“磅一公斤”和你得到的换算系数： “一磅一公斤= 0.45359237 ”反之亦然“ 1公斤1英镑= 2.20462262 ” ，等等。 All answers are given to far too many significant figures to be practical in most measurements, for most everyday uses.所有答案都给予太多显着的数字，实际在大多数的测量，对于大多数日常用途。 I kg is 2.2 lbs, but we have discussed those issues endlessly elsewhere on this site in our i公斤，是2.2磅，但我们已讨论了这些问题，不断在其他地方关于这个站点在我们的 how to work out significant figures如何工作的重大数字 section.一节。 For now it is interesting just to know how much math there is in popular TV.现在有趣的是，只是为了知道有多少数学有受欢迎的电视。