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China will replace Russia in this role soon enough after Putin's gone.

Russia will change for the better when Putin's gone.

the Mig29s are a separate issue. What would the Ukrainians do with them? they hardly have any infrastructure left to use them effectively, they will be shot down in no time at all. No fly zone can be achieved by other means like shooting down anything that flies with better surface to air weapons.

it's not the same type of application. The solar sail is aimed at collecting the maximum amount of photons, the beam hits it constantly at a perpendicular angle whereas your laser is aimed fleetingly (about 1-2 seconds) more or less at the nose of a bullet coming at it at 4-10 times the speed of...

that is possible if the incidental energy is absorbed by the target. Most photons aren't absorbed, that why we see things.

I vaguely remember some stuff about surface wave conductance, refraction and reflection as we studied Maxwell's equations in my second year at uni. Essentially, to deflect your laser beam, the missile's surface needs to be coated with a layer of highly conductive material like copper or silver...

I really did not expect that Putin would go that far. He's gone mad and is going to kill a lot of Russians and Ukrainians alike before this is over.

Like the German Barbarossa special operation, Russia can't win this one on the long run. It has an initial advantage but that advantage is reduced by the day. For all intents and purposes, Putin's army is stuck. It did not vanquish the Ukrainian army in the last 12 days, it can't do that now...

fighting against invaders is never pointless, flecc. Not fighting them at all is not a solution. There are millions of Ukrainians who will want to defend their country against 200,000 Russian invaders. We are not in the 16th century when a few Spanish canons conquered an Aztec empire. Within a...

Who does the maiming and killing exactly? Who decides which cities to reduce to rubble? Who forced millions to seek shelter underground? When you have a bullying neighbour like putin, if you don't fight, he'll make you his slaves.

flecc has the advantage of a real and personal experience f world war 2 while most of us were not even born or too young for that. By the time I could notice things, most of the war torn towns have been repaired. Still, we tend to split hair on this thread, the differences between us aren't as...

it may be easier to apply for NATO membership than EU membership.

how can anyone take the view that making 6 million people refugees is the right thing to do?

I've seen reports on Putin's support a few days ago. That was well before Russian people knew much about what's going on, before Putin imposed a 15 year jail threat on those who dare watch the BBC or CNN or some other non-Russian news and before images of Russian helicopters being shot down and...

cut a piece of cardboard, 36cm L x 10cm H to see first if it would go inside the triangle. you also need to make sure that the bottom end of the cardboard clears the chainring. Best post some pictures of the cardboard in your bike frame, we'll check that it will work for you.

Putin threatens the West casually with nuclear war, especially with smaller yield weapons. We never did the same to him. When the people of Russia see that their real security is under threat, I am pretty sure that a vast number of Russians can see the folly of Putin for what it really is.

the point is we want to live in a civilised world where the only war is the one that wipes us all out, the very proof that we are not civilised enough. Putin must not succeed in making an estimated 15% of Ukrainians refugees. I am sure you see that as a crime against humanity. Think about it...

found it, it's called an anti-drop tool: https://www.ebay.co.uk/itm/384401745931 The price has gone up so much! it's now doubled what I paid for it.

you need a long M8 bolt to hold the tool like this: I bought one of those sold on ebay for £2-£3 but forgot what they are called.

Putin can't fail unless the West is willing to stop him.