Context: The line “These truly did resemble new silver coins” is mentioned in the story “The Making of a Scientist” by Richard Feynman. The story describes Feynman’s experience of learning how to make silver coins in his youth.

Referring to the creation of silver coins: The line “These truly did resemble new silver coins” refers to the successful creation of silver coins by Feynman and his friend. They had melted down a silver wire and poured it into a mold to create the coins. Feynman was surprised by the quality of the coins they had made. He had expected them to be rough and uneven, but they turned out to be smooth and shiny.

Implying the success of the experiment: The line implies that the experiment was a success. Feynman had set out to create silver coins and had succeeded in doing so. The fact that the coins resembled new silver coins indicates that they were of high quality and could be mistaken for real currency.

Showing the excitement of the author: The line also conveys the excitement and pride that Feynman felt at the success of the experiment. The use of the word “truly” suggests that Feynman was amazed by the quality of the coins and perhaps even a little surprised that they had turned out so well.

Highlighting the significance of the achievement: The line also highlights the significance of the achievement. Feynman had not only learned how to create silver coins, but he had also gained a deeper understanding of the properties of silver and the process of melting and molding metal. This experience may have sparked his interest in science and set him on the path to becoming a scientist.

In conclusion, the line “These truly did resemble new silver coins” refers to the successful creation of high-quality silver coins by Feynman and his friend. It implies the success of the experiment, the excitement of the author, and the significance of the achievement.