Class 10 Physics — Icse

She used the gamma source to check for cracks in the lighthouse wall (a real-world application). The detector clicked rapidly where the wall was thin. At sunrise, the Lighthouse of Shattered Cove shone bright. The foghorn boomed. The radio sent its signal. The backup battery was charged.

She replaced the bulb. This time, she connected two bulbs in . They were dim. “The voltage divides,” she noted. icse class 10 physics

But the radio signal to trigger the foghorn came through empty space. “That’s an ,” he said. “No medium needed.” She used the gamma source to check for