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 rod cells respond to light and dark the cones are responsible for color vision but we only see the light that actually enter his our eyes if you are in zambia wanted to know more. Light travel. During a thunderstorm or you see the lightning straight away but we hear the thunder. Thats because sound waves move slowly or as light travels super fast. 300000 kilometers per 2nd. It maintains that speed in space where theres a vacuum and it moves only slightly slower through the earths atmosphere but other media slow it down for example water in which it travels at a mere 225000 kilometers a 2nd. Light travels like ripples spreading on the surface of a liquid in all directions simultaneously. And in Straight Lines which is why we talk of light rays sometimes its even possible for us to see the. Ligh
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 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 they were in zambia wanted to know more. Light travel. During a thunderstorm or you see the lightning straight away but we hear the thunder with a glow. Thats because sound waves move slowly or as light travels super fast yes. 300000 kilometers per 2nd. It maintains that speed in space where theres a vacuum and it moves only slightly slower through the earths atmosphere but other media slow down for example water in which it travels at a mere 225000 kilometers a 2nd. Travels like ripples spreading on the surface of a liquid in all directions simultaneously. And in Straight Lines which is why we talk of light rays sometimes its even possible for us to see the
Against brazilian side flamengo. The australian Prime Minister, Scott Morrison, has acknowledged public anger at his decision to go on holiday while his country faces a bushfire crisis. Mr morrison said if he could go back he would have made a different choice. The fires are expected to worsen with more hot dry weather expected. Mr morrison did acknowledge the role of climate change, but said warming temperatures couldnt be connected to any single fire. Gareth barlow reports. This is the remarkable, almost apocalyptic scene facing firefighters tackling australias deadly and devastating wildfires. Fire chiefs described saturday as an awful day. As thousands of personnel tackle raging infernos, the countrys Prime Minister, Scott Morrison, has been heavily criticised for being on holiday in hawaii, but the pm has cut short his trip to return home. I get it that people would have been upset to know that i was holidaying with my family while their families were under great stress. They know
The emperors cup soccer saturday as an awful day. Final on new years day. As thousands of personnel tackle raging infernos, the countrys Prime Minister, scott morrison, has been heavily now on bbc news, its criticised for being on holiday the clickmas special with bags in hawaii, of seasonal tech fun. But the pm has cut we hear from tim peake on the year short his trip to return home. In space and pitch man against robot i get it that people would have been to see whos the fastest driver upset to know that i was holidaying around an f1 circuit. With my family while their families were under great stress. They know that i am not ohohoh merry clickmas going to stand there and hold a hose, iam not anyway, this festive a trained firefighter. Week we have cars, dogs, im conforted by the fact that astronauts, and lots australians would like me to be herejust simply so i can be here. An areas the size of belgium has and lots of singing furbies. Been torched by the fires. Hundreds of homes hav
Hello and welcome to bbc news. The australian Prime Minister, scott morrison, has acknowledged public anger at his decision to go on holiday while his country faces a bushfire crisis. Mr morrison said if he could go back, he would have made a different choice. The fires are expected to worsen with more hot dry weather expected. Mr morrison did acknowledge the role of climate change, but said warming temperatures couldnt be connected to any single fire. Gareth barlow reports. This is the remarkable, almost apocalyptic scene facing firefighters tackling australias deadly and devastating wildfires. Fire chiefs described saturday as an awful day. As thousands of personnel tackle raging infernos, the countrys Prime Minister, scott morrison, has been heavily criticised for being on holiday in hawaii, but the pm has cut short his trip to return home. I get it that people would have been upset to know that i was holidaying with my family while their families were under great stress. They know