Facts that shocked you

[Cockaigne]

Any battery is net negative, it is the combination of moving energy.

Fed the people biofuel, food, harness heat and electricity generation.

[98elise]

Cockaigne said:

The body produces 100w of power an hour just on tick over, metabolic processes. The body can produce 1000w a hour under strenuous exercise, think Matrix.

Being pedantic but power (w) is a rate of energy consumption so time doesn't come into it. When you measure power over time its energy (kWh)

[deadtom]

98elise said:

Being pedantic but power (w) is a rate of energy consumption so time doesn't come into it. When you measure power over time its energy (kWh)

being extra pedantic, watts are joules per second, so time does come into it, but the point I think you're making is a good one; it may be possible for a fairly strong person to produce 1000 W for a short time, but this is not remotely sustainable for a human.

This chap for example, is, in local parlance, very powerfully built (look at that stem and bar flex goddamn) and a professional athlete, but producing ~ 700 W for a little over a minute looks to nearly finish him

https://www.youtube.com/watch?v=S4O5voOCqAQ

ETA one horse power is approx 750 watts, so while the very strong human in the video can almost do this for a minute, to produce this much power continuously you would need an animal roughly the size of... a horse

Edited by deadtom on Friday 18th August 14:09

[HustleRussell]

deadtom said:

being extra pedantic, watts are joules per second, so time does come into it, but the point I think you're making is a good one; it may be possible for a fairly strong person to produce 1000 W for a short time, but this is not remotely sustainable for a human.

This chap for example, is, in local parlance, very powerfully built (look at that stem and bar flex goddamn) and a professional athlete, but producing ~ 700 W for a little over a minute looks to nearly finish him

https://www.youtube.com/watch?v=S4O5voOCqAQ

ETA one horse power is approx 750 watts, so while the very strong human in the video can almost do this for a minute, to produce this much power continuously you would need an animal roughly the size of... a horse

Yeah but he's also producing a lot of heat, a bit of light, and a lot of work which isn't going perfectly into the spindle

[deadtom]

HustleRussell said:

Yeah but he's also producing a lot of heat, a bit of light, and a lot of work which isn't going perfectly into the spindle

I originally planned to say something along the lines of 'true, but humans are more efficient than cars and don't lose twice the energy to heat as they produce in useful power, so that wouldn't meaningfully change the outcome' but I wanted to find an actual number, and in doing so found a fact that shocked me...

Humans are only about 25% efficient, which is worse than most modern ICE vehicles

https://dothemath.ucsd.edu/2011/11/mpg-of-a-human/

I think that might be an overly simplistic way of looking at it though, because the heat generated is necessary to keep us alive, so isn't really wasted as such... right?

I await a biology type person to deploy some knowledge in a way that is easy to understand for my tiny brain that is much better at mechanical stuff than biology

[HustleRussell]

…and that’s without even considering emissions!

[Cockaigne]

deadtom said:

I originally planned to say something along the lines of 'true, but humans are more efficient than cars and don't lose twice the energy to heat as they produce in useful power, so that wouldn't meaningfully change the outcome' but I wanted to find an actual number, and in doing so found a fact that shocked me...

Humans are only about 25% efficient, which is worse than most modern ICE vehicles

https://dothemath.ucsd.edu/2011/11/mpg-of-a-human/

I think that might be an overly simplistic way of looking at it though, because the heat generated is necessary to keep us alive, so isn't really wasted as such... right?

I await a biology type person to deploy some knowledge in a way that is easy to understand for my tiny brain that is much better at mechanical stuff than biology

the thing is a lot of energy used is metabolic processes, so can't really compare this. Unless you take humans without a brain.

[Countdown]

I was shocked to find out that UberXL wasn’t a special taxi service for fat people

[otolith]

Cockaigne said:

the thing is a lot of energy used is metabolic processes, so can't really compare this. Unless you take humans without a brain.

This optimisation could explain a lot about cycle couriers and food delivery riders.

[QuickQuack]

98elise said:

Babies are born with their full set of adult teeth already formed in the jaw.

ZedLeg said:

otolith said:

mikey_b said:

Indeed - an xray of a baby's face is quite a sight.

I think you misspelled “a Lovecraftian horror”

Aye, it's a child's skull that I've seen but it's one of the few things that's genuinely bothered me when I saw it. A part of me still refuses to accept it's real

Being pedantic, no, that's not entirely correct.

By the 6th week of development, the basal layer of the epithelial lining of the oral cavity forms a C-shaped structure, the dental lamina, along the length of the upper and lower jaws. This lamina subsequently gives rise to a number of dental buds, 10 in each jaw, which form the primordia of the ectodermal components of the teeth. This is only the first stage of the complex process of the formation of the teeth. The process continues until the eruption of the deciduous (milk) teeth at 6-24 months after birth. Even at birth, the process of the formation of any of the milk teeth is not complete in the vast majority of babies.

The buds for the permanent teeth are located on the lingual aspect of the milk teeth and are formed during the 3rd month of development. However, these buds remain dormant until approximately the 6th year of life when they start to fully form and begin to grow. Therefore, although it would be correct to say that babies are born with the precursors of their adult teeth already formed in their jaws, these are by no means "the full set of adult teeth" which will erupt through their gums in several years. They're not even born with the full set of milk teeth since even they haven't completed their formation yet.

Yes, you can see the tooth buds and the milk teeth which have not completed their growth on the X-rays, but they're still not fully developed teeth.

[anonymous-user]

QuickQuack said:

98elise said:

Babies are born with their full set of adult teeth already formed in the jaw.

ZedLeg said:

otolith said:

mikey_b said:

Indeed - an xray of a baby's face is quite a sight.

I think you misspelled “a Lovecraftian horror”

Aye, it's a child's skull that I've seen but it's one of the few things that's genuinely bothered me when I saw it. A part of me still refuses to accept it's real

By the 6th week of development, the basal layer of the epithelial lining of the oral cavity forms a C-shaped structure, the dental lamina, along the length of the upper and lower jaws. This lamina subsequently gives rise to a number of dental buds, 10 in each jaw, which form the primordia of the ectodermal components of the teeth. This is only the first stage of the complex process of the formation of the teeth. The process continues until the eruption of the deciduous (milk) teeth at 6-24 months after birth. Even at birth, the process of the formation of any of the milk teeth is not complete in the vast majority of babies.

Pffft, everyone knows that....

[Zetec-S]

Having watched numerous US TV shows and films set in New York, my impression was that the city was full of alleys. Randomly browsing the internet earlier and discovered that there are hardly any.

[ChocolateFrog]

anonymous-user said:

QuickQuack said:

98elise said:

Babies are born with their full set of adult teeth already formed in the jaw.

ZedLeg said:

otolith said:

mikey_b said:

Indeed - an xray of a baby's face is quite a sight.

I think you misspelled “a Lovecraftian horror”

Aye, it's a child's skull that I've seen but it's one of the few things that's genuinely bothered me when I saw it. A part of me still refuses to accept it's real

By the 6th week of development, the basal layer of the epithelial lining of the oral cavity forms a C-shaped structure, the dental lamina, along the length of the upper and lower jaws. This lamina subsequently gives rise to a number of dental buds, 10 in each jaw, which form the primordia of the ectodermal components of the teeth. This is only the first stage of the complex process of the formation of the teeth. The process continues until the eruption of the deciduous (milk) teeth at 6-24 months after birth. Even at birth, the process of the formation of any of the milk teeth is not complete in the vast majority of babies.

Pffft, everyone knows that....

It's very obvious that there isn't a full set of fully sized adults teeth in a baby's jaw.

You'd have to have never seen a baby to believe that was true.

[98elise]

ChocolateFrog said:

anonymous-user said:

QuickQuack said:

98elise said:

Babies are born with their full set of adult teeth already formed in the jaw.

ZedLeg said:

otolith said:

mikey_b said:

Indeed - an xray of a baby's face is quite a sight.

I think you misspelled “a Lovecraftian horror”

Aye, it's a child's skull that I've seen but it's one of the few things that's genuinely bothered me when I saw it. A part of me still refuses to accept it's real

By the 6th week of development, the basal layer of the epithelial lining of the oral cavity forms a C-shaped structure, the dental lamina, along the length of the upper and lower jaws. This lamina subsequently gives rise to a number of dental buds, 10 in each jaw, which form the primordia of the ectodermal components of the teeth. This is only the first stage of the complex process of the formation of the teeth. The process continues until the eruption of the deciduous (milk) teeth at 6-24 months after birth. Even at birth, the process of the formation of any of the milk teeth is not complete in the vast majority of babies.

Pffft, everyone knows that....

It's very obvious that there isn't a full set of fully sized adults teeth in a baby's jaw.

You'd have to have never seen a baby to believe that was true.

Yes to be fair the fully sized bit was a mistake. I'd seen an xray of a child's skull with the full set in jaws, and one comment below said they are there at birth (but not saying full sized)

It's fairly obvious that a baby's jaw couldn't accommodate adult sized teeth. They would have to fully form later.

[h0b0]

Zetec-S said:

Having watched numerous US TV shows and films set in New York, my impression was that the city was full of alleys. Randomly browsing the internet earlier and discovered that there are hardly any.

NYC was designed purposely not to have alleys. There are about 6 in total and they are in the South of the island where buildings were not demolished for the grid pattern. Cortlandt Alley is the one used most for film and TV when the storyline requires it.

[hidetheelephants]

h0b0 said:

Zetec-S said:

Having watched numerous US TV shows and films set in New York, my impression was that the city was full of alleys. Randomly browsing the internet earlier and discovered that there are hardly any.

NYC was designed purposely not to have alleys. There are about 6 in total and they are in the South of the island where buildings were not demolished for the grid pattern. Cortlandt Alley is the one used most for film and TV when the storyline requires it.

Where do they keep the bins and those piles of cardboard boxes cops drive through when chasing the bad guy?

[h0b0]

hidetheelephants said:

h0b0 said:

Zetec-S said:

Having watched numerous US TV shows and films set in New York, my impression was that the city was full of alleys. Randomly browsing the internet earlier and discovered that there are hardly any.

NYC was designed purposely not to have alleys. There are about 6 in total and they are in the South of the island where buildings were not demolished for the grid pattern. Cortlandt Alley is the one used most for film and TV when the storyline requires it.

Where do they keep the bins and those piles of cardboard boxes cops drive through when chasing the bad guy?

While I realise this was in jest so do not require a parrot, there is some truth here. Garbage for police chases is everywhere. Buildings pile up there garbage bags and boxes on the curb (on the pavement) for pick up.

[Monkeylegend]

h0b0 said:

hidetheelephants said:

h0b0 said:

Zetec-S said:

Having watched numerous US TV shows and films set in New York, my impression was that the city was full of alleys. Randomly browsing the internet earlier and discovered that there are hardly any.

NYC was designed purposely not to have alleys. There are about 6 in total and they are in the South of the island where buildings were not demolished for the grid pattern. Cortlandt Alley is the one used most for film and TV when the storyline requires it.

Where do they keep the bins and those piles of cardboard boxes cops drive through when chasing the bad guy?

While I realise this was in jest so do not require a parrot, there is some truth here. Garbage for police chases is everywhere. Buildings pile up there garbage bags and boxes on the curb (on the pavement) for pick up.

So where do they keep all the dumpsters that they find dead bodies in then ?

[h0b0]

Monkeylegend said:

h0b0 said:

hidetheelephants said:

h0b0 said:

Zetec-S said:

Having watched numerous US TV shows and films set in New York, my impression was that the city was full of alleys. Randomly browsing the internet earlier and discovered that there are hardly any.

NYC was designed purposely not to have alleys. There are about 6 in total and they are in the South of the island where buildings were not demolished for the grid pattern. Cortlandt Alley is the one used most for film and TV when the storyline requires it.

Where do they keep the bins and those piles of cardboard boxes cops drive through when chasing the bad guy?

While I realise this was in jest so do not require a parrot, there is some truth here. Garbage for police chases is everywhere. Buildings pile up there garbage bags and boxes on the curb (on the pavement) for pick up.

So where do they keep all the dumpsters that they find dead bodies in then ?

New Jersey

[CammyN]

We are lucky that sound doesn't travel through space

The roar from the sun would deafen us.