> the thermal expansion issue in this blog post has been brought up The author missed the "not rigidly fixed" part when he was analyzing thermal expansion issu

> the thermal expansion issue in this blog post has been brought up The author missed the "not rigidly fixed" part when he was analyzing thermal expansion issue. My comment: https://news.ycombinator.com/item?id=6238022 https://news.ycombinator.com/item?id=6238022