cb25
Posts: 3,528 
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Post by cb25 on May 7, 2019 9:28:07 GMT
If our government really believes in a climate change emergency, you might think they'd be working on reducing air travel or similar, but instead we Michael Gove coming out with stuff like this (article here):
"The Environment Secretary will host a summit next week when he will call on 300 organisations and prominent individuals to pledge to significantly reduce their food waste.
The pledge includes a commitment to checking the fridge before going shopping and always using a shopping list to better plan meals."
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Who knew you should check the fridge before going food shopping? Just astounding breakthrough, going to make a major difference.
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Post by captainconfident on May 7, 2019 10:11:52 GMT
The Labour local election leaflet I received had a photo of our MP visiting a pub to congratulate them on having stopped using plastic straws. Such are the incredible self sacrifices people in our area are doing. I might cycle to choir practice tonight if he's there to shake my hand. Call the press!
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one21
Member of DD Central
Posts: 398
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Post by one21 on May 7, 2019 10:24:21 GMT
The Labour local election leaflet I received had a photo of our MP visiting a pub to congratulate them on having stopped using plastic straws. Such are the incredible self sacrifices people in our area are doing. I might cycle to choir practice tonight if he's there to shake my hand. Call the press! Perhaps he was sucking up to the press !  (sorry couldn't resist that one)
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adrianc
Member of DD Central
Posts: 10,014
Likes: 5,143
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Post by adrianc on May 7, 2019 16:55:21 GMT
The Labour local election leaflet I received had a photo of our MP visiting a pub to congratulate them on having stopped using plastic straws. Such are the incredible self sacrifices people in our area are doing. I might cycle to choir practice tonight if he's there to shake my hand. Call the press! It's a very neat way of putting a pint on expenses.
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Post by martin44 on May 7, 2019 21:54:49 GMT
If our government really believes in a climate change emergency, you might think they'd be working on reducing air travel or similar, but instead we Michael Gove coming out with stuff like this (article here):
"The Environment Secretary will host a summit next week when he will call on 300 organisations and prominent individuals to pledge to significantly reduce their food waste.
The pledge includes a commitment to checking the fridge before going shopping and always using a shopping list to better plan meals."
---
Who knew you should check the fridge before going food shopping? Just astounding breakthrough, going to make a major difference.
Quite right, a couple of hundred flower power weirdos have seemingly created a major govt re-think... yet homelessness, food bank usage, Knife crime etc etc .............................. i'm no lefty (quite the opposite) but at some point GB has to get its priorities in order.
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Post by captainconfident on May 8, 2019 8:29:10 GMT
If our government really believes in a climate change emergency, you might think they'd be working on reducing air travel or similar, but instead we Michael Gove coming out with stuff like this (article here):
"The Environment Secretary will host a summit next week when he will call on 300 organisations and prominent individuals to pledge to significantly reduce their food waste.
The pledge includes a commitment to checking the fridge before going shopping and always using a shopping list to better plan meals."
---
Who knew you should check the fridge before going food shopping? Just astounding breakthrough, going to make a major difference.
Quite right, a couple of hundred flower power weirdos have seemingly created a major govt re-think... yet homelessness, food bank usage, Knife crime etc etc .............................. i'm no lefty (quite the opposite) but at some point GB has to get its priorities in order. So you are saying that only after every social issue in Britain is solved, should mass extinction and the climate changing to make the planet unlivable be addressed?
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adrianc
Member of DD Central
Posts: 10,014
Likes: 5,143
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Post by adrianc on May 8, 2019 9:00:33 GMT
...but at some point GB has to get its priorities in order. Nah, we'd far rather waste three years of government headspace on telling the neighbours where to go.
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Post by Deleted on May 8, 2019 16:01:35 GMT
We were discussing airpower a ways back
rough figs but we need to look at two measures
1) specific energy MJ/kg 2) energy density MJ/litre
Hydrogen (700 bar)
specific energy 120 MJ/kg
energy density 5 MJ/litre
Gasoline (liquid)
specific energy 45 MJ/kg
energy density 34 MJ/litre
Battery Lithium
specific energy 5 MJ/kg
energy density ? MJ/litre
so yes H2 is nice and energetic per kg but it needs a big big tank to hold the fuel and then at 700bar it is too massive to carry
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Godanubis
Member of DD Central
Anubis is known as the god of death and is the oldest and most popular of ancient Egyptian deities.
Posts: 2,011
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Post by Godanubis on May 8, 2019 16:23:19 GMT
The Labour local election leaflet I received had a photo of our MP visiting a pub to congratulate them on having stopped using plastic straws. Such are the incredible self sacrifices people in our area are doing. I might cycle to choir practice tonight if he's there to shake my hand. Call the press! Don't call them yet. The decaying  that you manage to scare out off the pigeons in the bell tower with your choir practice will add to global warming. 
P.S should a Devil avitar really be going to church ?
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Godanubis
Member of DD Central
Anubis is known as the god of death and is the oldest and most popular of ancient Egyptian deities.
Posts: 2,011
Likes: 1,013
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Post by Godanubis on May 8, 2019 16:37:48 GMT
We were discussing airpower a ways back
rough figs but we need to look at two measures
1) specific energy MJ/kg 2) energy density MJ/litre
Hydrogen (700 bar)
specific energy 120 MJ/kg
energy density 5 MJ/litre
Gasoline (liquid)
specific energy 45 MJ/kg
energy density 34 MJ/litre
Battery Lithium
specific energy 5 MJ/kg
energy density ? MJ/litre
so yes H2 is nice and energetic per kg but it needs a big big tank to hold the fuel and then at 700bar it is too massive to carry
Plutoium has specific energy of 82 TJ/kg a million times any of the others. Some smaller reractors with tiny amounts of PU-239 or uranium-235 similar output could be carried on a plane within crash proof enclosures. Would the public like it. I think not.
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Post by bracknellboy on May 8, 2019 16:42:19 GMT
We were discussing airpower a ways back
rough figs but we need to look at two measures
1) specific energy MJ/kg 2) energy density MJ/litre
...
Gasoline (liquid)
specific energy 45 MJ/kg
energy density 34 MJ/litre
...
the temporal distance between now and the time of my Physics degree is showing its magnitude......
I note that kerosene has a higher energy density but slightly lower specific energy than gasoline. Was trying to recall whether that was the main reason for using it for avaiation fuel (the slightly lower specific energy outweighed by advantages of considerably higher energy density).
But no. Its due to lower freezing point and higher flash point
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Post by Deleted on May 8, 2019 19:35:12 GMT
We were discussing airpower a ways back
rough figs but we need to look at two measures
1) specific energy MJ/kg 2) energy density MJ/litre
Hydrogen (700 bar)
specific energy 120 MJ/kg
energy density 5 MJ/litre
Gasoline (liquid)
specific energy 45 MJ/kg
energy density 34 MJ/litre
Battery Lithium
specific energy 5 MJ/kg
energy density ? MJ/litre
so yes H2 is nice and energetic per kg but it needs a big big tank to hold the fuel and then at 700bar it is too massive to carry
Plutoium has specific energy of 82 TJ/kg a million times any of the others. Some smaller reractors with tiny amounts of PU-239 or uranium-235 similar output could be carried on a plane within crash proof enclosures. Would the public like it. I think not. I don't think tiny ammounts stimulate the energy release either. However larger quantities are used for satalites and their on board power.
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Post by martin44 on May 8, 2019 21:14:48 GMT
Quite right, a couple of hundred flower power weirdos have seemingly created a major govt re-think... yet homelessness, food bank usage, Knife crime etc etc .............................. i'm no lefty (quite the opposite) but at some point GB has to get its priorities in order. So you are saying that only after every social issue in Britain is solved, should mass extinction and the climate changing to make the planet unlivable be addressed? Not quite, i'll use the aeroplane emergency procedure analogy ........ "If the aircraft becomes depressurised, oxygen masks will fall from above....... ALWAYS ENSURE YOU PLACE YOUR OWN MASK ON BEFORE HELPING OTHERS TO FIT THEIR'S"
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Post by martin44 on May 8, 2019 21:37:54 GMT
Having watched yet another episode of "Earth from space" just now, i am astounded at the sheer brilliance of how this program shows both the wrecking abilities of urban spread, and in contradiction, the ability of small change to create regeneration, this program should be shown in schools throughout the world.
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Post by captainconfident on May 9, 2019 10:20:44 GMT
So you are saying that only after every social issue in Britain is solved, should mass extinction and the climate changing to make the planet unlivable be addressed? Not quite, i'll use the aeroplane emergency procedure analogy ........ "If the aircraft becomes depressurised, oxygen masks will fall from above....... ALWAYS ENSURE YOU PLACE YOUR OWN MASK ON BEFORE HELPING OTHERS TO FIT THEIR'S" I'm surprised but I like that answer. I admit that I have the luxury of being environmentally alarmed because I am quite well off. I can buy an oxygen mask any time I need one. However I am quite well off because of my environmental inactivism, i.e. I chose not to have children. Here I find a contradiction in myself: As a childless person with only distant relatives, I have practically no investment in the future of the planet. When I'm gone, I'm gone. So in the words of the late great Jim Morrison, I should say "I'm going to get my kicks, before the whole shithouse goes up in flames". But I find myself deeply concerned, deeply in love with the natural world, to put it in a clumsy way. I feel terrible about the wrecking of the natural habitats of the animals, the extinction of unique animal species and ashamed to be a human being who contributed to it. I wonder where this comes from. So my forum friends, my plan is to use all my surplus capital to buy the biggest block of marginal farmland I can and rewild it. Preferably with a stream of river in it for wetland creation. I see this as the best way to give something back to the planet I have so much enjoyed living on and leave, if you like, a kind of memorial to my time spent here. I have about £1.5m for the project and if anyone reading likes this idea and would like to discuss adding to this fund and adding their name to this new nature reserve, please send me a PM.
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(sorry couldn't resist that one)
that you manage to scare out off the pigeons in the bell tower with your choir practice will add to global warming. 
