How and why do we measure time? - with Leon Lobo

Why do we need to coordinate the way we measure time? And how do atomic clocks work? Find out with Leon Lobo, Head of the National Timing Centre (NTC) programme at the National Physical Laboratory.
This video is part of our celebration of British Science Week 2024, which this year has the theme of 'time'. Find out more at www.britishscienceweek.org/
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A chartered engineer, with a PhD in high power laser material processing, Dr Lobo joined NPL in 2011 as Group Leader for the Time & Frequency group, working with the team managing the UK’s time scale and developing quantum frequency standards. He led the team developing NPLTime®, NPL’s certified fibre-delivered time dissemination solution to the City of London for high frequency trading systems and regulatory compliance. 
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[@carnivaltym]

Bloody hell, this is absolutely one of the GOAT shorts! Well done.

[@philipmurphy2]

Wow a interesting time video 👍

[@Lasselucidora]

I thought all serious scientists used a ping pong ball bouncing in a train to measure time.

[@graeme-sailingskeptic]

😂

[@JohnClulow]

Excellent video! Thank you!

[@aleksandrpeshkov6172]

Enters ❤ : " ... Time is all about the options ... " Ya name'em All❤

[@pawsome_123]

Wow, so much valuable info in this video! With longer videos, it can be hard to retain everything.Anyone know of any AI tools that summarize key points from KZbin videos?

[@stewartfraser2740]

Considering the devastating affects if time is displaced eg by cyber attack etc. I wonder just how well it is protected?

[@mimidhof2179]

Great reminder

[@Hugo_Overthere]

You said that atomic clocks are driven by radiation at a given "energy". However, given that radiation energy can also be defined as wavelength can it be said that you are using one atomic frequency clock to drive another atomic frequency clock? What method could you use to check the frequency of both clocks?

[@ShuoreBangla]

Wow

[@pif5023]

I am so interest to know what do American use. Cheeseburger cooking time? What’s the freedom unit for time?

[@frankzaffuto3670]

It's either bald Eagle wing flaps or 65 rounds from a GAU-8

[@user-ju4bj6nv6z]

" Нет ребята, всё не так, всё не так ребята" Владимир Высоцкий. Что же такое время? Вероятно придётся начинать анализ образования времени с образования материальной частицы как основы материального мира. Задача анализа образования материальной частицы сложна на первый взгляд, но, сложность возникает по причине устоявшихся представлений, или, ...... .Однако, время течёт непрерывно только где есть движение частиц по кругу, где движение начинается и заканчивается вне окружности, такое движение анализируем всё равно относительно движению по окружности. Есть малые окружности и там своё время цикла, но, малые окружности входят в сферу больших окружностей и соответственно в больший цикл.К чему сей анализ? Материальный процесс обладает своими законами, а разобраться и осознать эти законы предстоит тем, кто пришёл в механику материальных процессов. Выходит, приходим в материю, как не крути. Обоснования точности времени, очень нужно, но, желательно осознавать саму суть времени.

[@ThunderBassistJay]

I don't think time can be measured. Clocks just track duration, based on a set of rules. 😉

[@dougaltolan3017]

Time is an illusion, lunch time, doubly so.

[@bearez1]

The only time you live in is the present.

[@SquareOneForge]

Mmm brain food

[@TheRadioAteMyTV]

All this because trains went fast enough to notice and needed a way to schedule pick up and drop offs. Yet the meaning of noon is about as far from what this guy is talking about as possible.

[@015prabhatkumar6]

If you are from India , hit like button 👍

[@The-Cosmos]

I am. I am not providing you likes however.

[@dougaltolan3017]

Time and maths are wrong. Take today's date, subtract the date you were born. The result is a completely meaningless number.

[@theextragalactic1]

⏰

[@apolyedapolyed7524]

Time is illusion.