=== HTTP code : 301 ===

Response headers
================
HTTP/1.1 301 Moved Permanently
Content-length: 0
Location: https://phys.org/news/2015-10-optical-scanner-potential-real-time-d.html
Connection: close

Request headers
================
HEAD /news/2015-10-optical-scanner-potential-real-time-d.html HTTP/1.1
Host: phys.org
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36
Accept: */*
Referer: https://bme.fiu.edu
Connection: close


Link is valid.