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From 1960 to 1983, the official length of a meter was defined using the wavelength of krypton’s spectrum. Now, it’s defined as the distance light travels in a vacuum in 1/299,792,458 of a second.
10 things you might not know about #krypton
https://topicaltens.blogspot.com/2020/10/2-october-krypton.html
Topical Tens2 October: KryptonToday is the birthdate of the chemist Sir William Ramsay, who discovered krypton. Here are 10 things you might not know about his discovery....
Born this date in 1852 was Sir William Ramsay, one of the chemists who co-discovered argon.
10 things you didn't know about argon:
https://topicaltens.blogspot.com/2021/10/2-october-argon.html
Topical Tens2 October: ArgonBorn this date in 1852 was Sir William Ramsay, one of the chemists who co-discovered argon. 10 things you didn't know about argon: The ...
Some vehicle headlights use xenon. If you see headlights that give off a soft blue glow, they are probably made with xenon.
10 things you might not know about xenon:
https://topicaltens.blogspot.com/2023/10/2-october-xenon.html
Topical Tens2 October: XenonBorn this date in 1852 was Sir William Ramsay, chemist who discovered xenon. Here are ten things you might not know about xenon: Xen...