<div dir="ltr">The 19th-century discovery of numbers called “quaternions” gave mathematicians a way to describe rotations in space, forever changing physics and math.<br><br><a href="https://www.quantamagazine.org/the-strange-numbers-that-birthed-modern-algebra-20180906/?fbclid=IwAR32bY8dnkg_hCYImiFlJgJL3g_r1CR9Eos4V_YEPcb7bvYJWlTe-8-83fY">https://www.quantamagazine.org/the-strange-numbers-that-birthed-modern-algebra-20180906/?fbclid=IwAR32bY8dnkg_hCYImiFlJgJL3g_r1CR9Eos4V_YEPcb7bvYJWlTe-8-83fY</a>  <br><br>TJ<br><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><br>============================================<br>Tom Johnson - <a href="mailto:tom@jtjohnson.com" target="_blank">tom@jtjohnson.com</a><br>Institute for Analytic Journalism   --     Santa Fe, NM USA<br>505.577.6482(c)                                    505.473.9646(h)<br><a href="http://nmfog.org" target="_blank"><b><font color="#0b5394">NM Foundation for Open Government</font></b></a><br><b><font color="#0000ff">Check out <a href="https://www.facebook.com/pages/Its-The-Peoples-Data/1599854626919671" target="_blank">It's The People's Data</a></font></b>                 </div><div>============================================</div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div>