Drilling hole in rock with concentrated sunlight using solar death ray #physics #science #solar r
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![Introducing the Most Powerful 20V MAX* Hammer Drill from DEWALT®† [DCD1007]](https://sun9-68.userapi.com/S7VpggH5cbmVlgWXvpZ-nKSDWRr0uhNuxnPfIg/M7E86Rv1-pU.jpg)
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