Topic
Engineering
2 articles on engineering: the maths or physics explained, ready-to-teach lesson plans, and how to build each slide in Tracé.
QAM Constellation Diagrams, Explained (BPSK to 256-QAM)What a constellation diagram shows, why 256-QAM needs a cleaner channel than QPSK, Gray coding, noise and phase errors, with animated examples.
How to Explain the TCP Three-Way HandshakeTeach the TCP handshake with a sequence diagram that plays one message per click: SYN, SYN-ACK, ACK, sequence numbers, and what happens when a packet is lost.