- The Hertzsprung–Russell diagram (abbreviated as H–R diagram, HR diagram or HRD) is a scatter plot of stars showing the relationship between the stars’ absolute magnitudes or luminosities and their stellar classifications or effective temperatures. The diagram was created independently in 1911 by Ejnar Hertzsprung and by Henry Norris Russell in 1913, and represented a major step towards an understanding of stellar evolution.
- Just Do It (Wikipedia)
Just Do It or JDI for short is a trademark of shoe company Nike. The slogan was coined in 1988 at an advertising agency meeting. The founder of the Wieden+Kennedy agency, Dan Wieden, credits the inspiration for his “Just Do It” Nike slogan to death row Gary Gilmore’s last words: “Let’s do it.” From 1988 to 1998, Nike increased its share of the North American domestic sport-shoe business from 18% to 43% (from $877 million to $9.2 billion in worldwide sales). In many Nike-related situations, “Just Do It” appears alongside the Nike logo, known as the Swoosh.
