Ch 1/2 Physics Matching
| What is the largest source of man-made radiation? |
| diagnostic x-rays |
| What is the largest natural radiation source? |
| radon |
| How is matter measured? |
| kilograms |
| When was the coolidge hot filament discovered? |
| 1913 |
| How is mass measured? |
| kilograms |
| When was it first realized that radiation causes biologic changes? |
| 1898 |
| How is energy measured? |
| joules |
| What is matter? |
| anything that occupies space and has mass |
| How are x-rays identified? |
| by energy |
| What are the basic concepts of radiation protection? |
| filtration, collimation, intensifying screens, gonadal shielding, protective barriers |
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