The history of the following note is as follows. In 2003, I invited Kenneth Johnson to Berlin to give a talk on adhesion in a seminar at the Institute of Mechanics. His lecture on the topic "Mechanics of adhesion of spherical surfaces" took place on Monday, January 26, 2004. In the run-up to the seminar, Professor Johnson sent me a historical note dated November 18, 2003. In my opinion, this note, which was written in the form of a paper, may be of interest for experts in contact mechanics and tribology. Prof. Johnson did not publish it, so it remained a private communication. For a publication he might have made a revision and would possibly have credited other important contributions. But this we can only guess at, and therefore the note is published below in the form I received it from Kenneth L. Johnson, with only a few misprints corrected. It is interesting as a historical document from Ken Johnson, who played a key role in development of theory of adhesive contacts.

以下笔记的历史如下。2003 年，我邀请肯尼斯·约翰逊 (Kenneth Johnson) 到柏林在力学研究所的一个研讨会上发表关于粘附的演讲。他的演讲题目是“球面的粘附力学”" 发生在 2004 年 1 月 26 日星期一。在研讨会的准备阶段，约翰逊教授给我寄了一份日期为 2003 年 11 月 18 日的历史笔记。在我看来，这篇以论文形式写成的笔记，接触力学和摩擦学专家可能会感兴趣。约翰逊教授没有发表它，所以它仍然是一个私人交流。对于一个出版物，他可能已经进行了修订，可能会记下其他重要的贡献。但这我们只能猜测，因此该注释以我从 Kenneth L. Johnson 那里收到的形式发表在下面，仅纠正了一些错误印刷。作为 Ken Johnson 的历史文献很有趣，他在理论的发展中发挥了关键作用粘合剂接触。