Does "land area" assume a country is perfectly flat?
推荐理由
Matt Parker from Standup Maths made a great video on exactly this subject
说明
这是2020年由Stand-up Maths发布的一部讲解,主题归在Recreational & visual math。它讲的是measuring land area这一支里的具体问题,而不是把整个领域扫一遍。适合按兴趣直接看、不打算先补课的人。内容上可以概括成:Matt Parker of Stand-up Maths asks whether a country's reported land area accounts for hills and mountains, working through how surface area depends on the resolution of elevation data. It follows up on a question from a viewer and work by researchers who measured it.这些读者给出的理由,核心是:HN recommends it in map projection and coastline threads as a fun look at how measurement choices change area figures.讲法不绑某一条新闻,过几年仍然可以当材料看。从2020年到2023年,有3位不同的读者在3个不同月份把它推荐出来,其中明确叫别人去看的有0次。适合用一集把一个概念补上的人。抓住它用的那个图像或类比,比背公式重要。如果已经会了基本定义,就把注意力放在它怎么把measuring land area变成能跟着复述的例子。
视频信息
- 频道
- Stand-up Maths
- 时长
- 17 分 51 秒
- 发布年份
- 2020