Light travels in

https://courses.lumenlearning.com/physics/chapter/25-1-the-ray-aspect-of-light/

https://www.bbc.co.uk/bitesize/guides/zq7thyc/revision/1

https://www.le.ac.uk/se/centres/sci/selfstudy/lac1.htm
https://www.factmonster.com/dk/encyclopedia/science-and-technology/light
https://www.science.org/content/article/light-bends-itself-rev2
https://www.toppr.com/guides/science/light/light-travels-along-a-straight-line/
https://www.toppr.com/ask/content/concept/light-travels-in-straight-line-210155/
https://www.twinkl.com/resource/t2-s-287-how-light-travels-task-setter-powerpoint

https://science.nasa.gov/how-does-light-travel

https://context.reverso.net/перевод/английский-русский/light+travels

https://www.bsu.edu/-/media/www/departmentalcontent/fseec/docs/speed%20of%20sound%20and%20light.doc?la=en&hash=682239B8EA895459321E500DC59F95D67D6B4AD1
https://www.olympus-lifescience.com/en/microscope-resource/primer/lightandcolor/speedoflight/

http://www.unesco.org/science/infocus_full_oct_05.shtml