I want to know the answer to the following question:
What did Feynman think that the truck windshield would shield him against?
All the background I'm provided with is that "On witnessing the blast, Feynman ducked towards the floor of his truck because of the immense brightness of the explosion, where he saw a temporary "purple splotch" afterimage of the event.". Is that enough to answer the question?
Answer: no