Karthikeyan A K 🐧 November 27, 2021 5:42pm Wonder if it uses Stirling engine? https://bafybeieqo7p4gjqpdscdjy5udnjlmds5bw5gwaykeqjnksghlw4epptzfm.ipfs.dweb.link/(1)%20Cooling%20fan%20uses%20heat%201845%20physicsgifs.mp4 #engineering #antique #vintage #technology #science
