- A fish (pl.: fish or fishes) is an aquatic, craniate, gill-bearing animal that lacks limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of living fish species are ray-finned fish, belonging to the class Actinopterygii, with around 99% of those being teleosts.
- Pipkin’s light bulb moment (spark.iop.org)
Early electric light bulbs gave off a harsh, glaring light. So, as a new recruit to General Electric in 1919, Marvin Pipkin had the brilliant idea to make bulbs with a frosted inner surface to give a gentler glow. His managers smiled indulgently and asked the eager young chemist to work on solving the problem.