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Vision but we only see the light that actually. If you are in zambia wanted to know more. Light travel. During a thunderstorm we see the lightning straight away but we hear the thunder. Thats because sound waves move slowly or as light travels super fast at 300000 kilometers per 2nd. It maintains that speed in space where theres a vacuum and moves only slightly slower through the earths atmosphere. Rather maybe a slower down for example water in which it travels at a mere 225000 kilometers a 2nd...

And the effects of city lights on nature. Lets start at the beginning with how we see light. A light enters our eye it hits the retina. And is received by photo receptor cells the socalled rod cells respond to light and dark the cones are responsible for color vision but we only see the light that actually enters our eyes if you are in zambia wanted to know more. Now theres light travel. During a thunderstorm or you see the lightning straight away but we hear the thunder with a glow. Thats becau...

Overcomes space and time. Alike based internet. And the effects of city lights on nature. But lets start at the beginning with how we see light. When light enters our eye it hits the retina. And is received by photo receptor cells the socalled rot cells respond to light and dark the cones are responsible for color vision but we only see the light that actually and his our eyes if he were in zambia wanted to know more. Light travel. During a thunderstorm or a soup. Lightning straight away but we ...

Overcome space and time. And like based internet. The effects of city lights on nature. That lets start at the beginning with how we see light. When light enters our eye it hits the retina. And is received by photo receptor cells the socalled rot cells respond to light and dark the cones are responsible for color vision but we only see the light that actually enters our eyes if they were in zambia wanted to know more all. Those light travel. During a thunderstorm or you see. The lightning straig...

Overcome space and time. And like based internet. And the effects of city lights on nature. But lets start at the beginning with how we see light. When light enters our eye it hits the retina. And is received by photo receptor cells the socalled rot cells respond to light and dark the cones are responsible for color vision but we only see the light that actually enters our eyes if you are in zambia wanted to know more. Light travel. During a thunderstorm or you see them. Lightning straight away ...

City lights on nature. But lets start at the beginning with how we see light. When light enters our eye it hits the retina. And is received by folks who are receptive cells the socalled rot cells respond to light and dark the cones are responsible for color vision but we only see the light that actually enters our eyes if you are in zambia wanted to know more. Trouble. During a thunderstorm or you see the lightning straight away but we hear the thunder. Thats because some. Waves move slowly wher...

Thank you for coming. That is the pink newspaper thats really good. I present bc radio. Ive done a show for the World Service ive made fifty inventions that shaped the modern economy. And how numbers lead us astray and sometimes help us to understand the world. I also have a podcast with a gentleman called michael lewis. Called Cautionary Tales its all about things going wrong sometimes and tragic ways and sometimes in amusing ways. In between all of that i try to write a few bucks. The second t...

Next, Technology Journalist and robert recount on the use of designing technology to increase usage in the book user friendly. The hello, friends. You only have to deal with me for about two minutes. I am the cofounder of postflig postflight, the place where you are right now, the company that builds software and all kinds of stuff. Beautiful website at postlight. Com. [inaudible] he asks me why im late on delivering the book and since they are so relevant to what we do here so you are seeing gu...

Start talking about technology. The first thing is im well aware that many of you have no idea who i am and so thank you for showing up out of the spirit appear to gossip. I think it speaks very well of you that i know theres some really, really big names at the festival and i feel very honored to be among them so thanks for coming. So who am i . A few things. I write a column called the undercover economist for the financial times. Thats the pink newspaper thats really good. I recommend it. Tha...

Writers festival. This is 45 minutes. Please welcome tim harford. [applause]. Thank you very much everyone. Host i dont believe in long preambles but i thought i should say a few words. I am well aware the many of you have no idea who i am printed as a thank you for showing up on the spirits of pure curiosity. It speaks very well of you. Even though its a really big name for the festival. I feel very honored to be amongst them. So who am i, few things. Already called the undercover columnist for...