Masters Of War

Come you masters of war You that build all the guns You that build the death planes You that build all the bombs You that hide behind walls You that hide behind desks I just want you to know I can see through your masks. You that never done nothin' But build to destroy You play with my world Like it's your little toy You put a gun in my hand And you hide from my eyes And you turn and run farther When the fast bullets fly. Like Judas of old You lie and deceive A world war can be won You want me to believe But I see through your eyes And I see through your brain Like I see through the water That runs down my drain. You fasten all the triggers For the others to fire Then you set back and watch When the death count gets higher You hide in your mansion' As young people's blood Flows out of their bodies And is buried in the mud. You've thrown the worst fear That can ever be hurled Fear to bring children Into the world For threatening my baby Unborn and unnamed You ain't worth the blood That runs in your veins. How much do I know To talk out of turn You might say that I'm young You might say I'm unlearned But there's one thing I know Though I'm younger than you That even Jesus would never Forgive what you do. Let me ask you one question Is your money that good Will it buy you forgiveness Do you think that it could I think you will find When your death takes its toll All the money you made Will never buy back your soul. And I hope that you die And your death'll come soon I will follow your casket In the pale afternoon And I'll watch while you're lowered Down to your deathbed And I'll stand over your grave 'Til I'm sure that you're dead.------- Bob Dylan 1963

Saturday, April 27, 2013

IBM solar collector magnifies sun by 2,000x (without cooking itself), costs 3x less than similar systems : TreeHugger

IBM solar collector magnifies sun by 2,000x (without cooking itself), costs 3x less than similar systems : 
TreeHugger


© IBM

Cleverly combining solar PV with solar thermal to reach 80% conversion efficiency

Concentrating the sun's ray onto solar photovoltaic (PV) modules requires walking the fine line between optimizing power output and not literally melting your very expensive super-high-efficiency solar cells. A team led by IBM Research seems to have found a way to push back the line. They have created a High Concentration PhotoVoltaic Thermal (HCPVT) system that is capable of concentrating the power of 2,000 suns onto hundreds of triple junction photovoltaic chips measuring a single square centimeter each (they even claim to be able to keep temperatures safe up to 5,000x). The trick is that each solar PV cell is cooled using technology developed for supercomputers; microchannels only a few tens of micrometers in width pipe liquid coolant in and extract heat "10 times more effective than with passive air cooling."
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