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I never grokked the optics behind LightHouses and the WW2 poster below work. LightHouse beams are narrow and focussed. Doubtless, the light source can fail to illumine a seafarer or the enemy subm...
Question
light
#3: Post edited
by
TextKit
·
2022-04-24T17:34:47Z (over 2 years ago)
- I never grokked the optics behind LightHouses and the WW2 poster below work. [LightHouse beams](https://thumbs.dreamstime.com/b/lighthouse-night-beacon-lighting-dark-sky-31776521.jpg) are [narrow and focussed](https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.pinterest.com%2Fpin%2F464785624045719588%2F&psig=AOvVaw2j4coc8P7Gt-N1oAJ4B6rL&ust=1650907865579000&source=images&cd=vfe&ved=0CA0QjhxqFwoTCPjWo5idrfcCFQAAAAAdAAAAABAJ).
- Doubtless, the light source can fail to illumine a seafarer or the enemy submarine. But then how can the seafarer or enemy sailors behold your light source?
- It counters intuition that although a light fails to illumine someone, that observer can still behold the light source! **Can you please correct my intuition?**
- _**I never studied science after secondary school. Please explain like I am (1)5.**_
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- 
- 
- 
I never studied science after secondary education. Please explain like I am (1)5.
- I never grokked the optics behind LightHouses and the WW2 poster below work. [LightHouse beams](https://thumbs.dreamstime.com/b/lighthouse-night-beacon-lighting-dark-sky-31776521.jpg) are [narrow and focussed](https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.pinterest.com%2Fpin%2F464785624045719588%2F&psig=AOvVaw2j4coc8P7Gt-N1oAJ4B6rL&ust=1650907865579000&source=images&cd=vfe&ved=0CA0QjhxqFwoTCPjWo5idrfcCFQAAAAAdAAAAABAJ).
- Doubtless, the light source can fail to illumine a seafarer or the enemy submarine. But then how can the seafarer or enemy sailors behold your light source?
- It counters intuition that although a light fails to illumine someone, that observer can still behold the light source! **Can you please correct my intuition?**
- _**I never studied science after secondary school. Please explain like I am (1)5.**_
- 
- 
- 
- 
#2: Post edited
by
TextKit
·
2022-04-24T17:32:21Z (over 2 years ago)
I never grokked the optics behind LightHouses and the WW2 poster below work. Doubtless, the light source can fail to illumine a seafarer or the enemy submarine. But then how can the seafarer or enemy sailors behold your light source?- It counters intuition that although a light fails to illumine someone, that observer can still behold the light source! **Can you please correct my intuition?**
- _**I never studied science after secondary school. Please explain like I am (1)5.**_
- 
- I never studied science after secondary education. Please explain like I am (1)5.
- I never grokked the optics behind LightHouses and the WW2 poster below work. [LightHouse beams](https://thumbs.dreamstime.com/b/lighthouse-night-beacon-lighting-dark-sky-31776521.jpg) are [narrow and focussed](https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.pinterest.com%2Fpin%2F464785624045719588%2F&psig=AOvVaw2j4coc8P7Gt-N1oAJ4B6rL&ust=1650907865579000&source=images&cd=vfe&ved=0CA0QjhxqFwoTCPjWo5idrfcCFQAAAAAdAAAAABAJ).
- Doubtless, the light source can fail to illumine a seafarer or the enemy submarine. But then how can the seafarer or enemy sailors behold your light source?
- It counters intuition that although a light fails to illumine someone, that observer can still behold the light source! **Can you please correct my intuition?**
- _**I never studied science after secondary school. Please explain like I am (1)5.**_
- 
- 
- 
- 
- I never studied science after secondary education. Please explain like I am (1)5.
#1: Initial revision
by
TextKit
·
2022-04-24T17:26:07Z (over 2 years ago)
Why can someone observe light, even when the light fails to illume that someone?
I never grokked the optics behind LightHouses and the WW2 poster below work. Doubtless, the light source can fail to illumine a seafarer or the enemy submarine. But then how can the seafarer or enemy sailors behold your light source? It counters intuition that although a light fails to illumine someone, that observer can still behold the light source! **Can you please correct my intuition?** _**I never studied science after secondary school. Please explain like I am (1)5.**_  I never studied science after secondary education. Please explain like I am (1)5.