How do I posit-- why do I believe in x-rays, even though I don't see them?

我如何证实,我为什么会相信X射线是存在的,尽管我压根看不见它

耶鲁公开课 - 死亡课程节选

The last time we saw T-rays, they were busy scanning bodies for tumors and security threats.

ENGADGET: T-rays produce 3Gbps short-range wireless, make WiFi pout in the corner

Dr. ANDREW EINSTEIN (Cardiologist, Columbia University): Using beta-blockers or other medications to lower patient's heart rate, which in many cases will chip the radiation dose down by minimizing the number of images which are taken, and matching the technical parameters such that the patient doesn't receive too many x-rays.

NPR: Study: Heart CT Scans May Pose Risk

"I've suffered this pain for quite a while but it's a bit of a strange problem because scans and X-rays don't show anything, " said Ferrero.

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