# EM Waves - part 2 of 'Photology for Microscopists'

**URL:** <https://forum.microlist.org/t/em-waves-part-2-of-photology-for-microscopists/2367>\
**Category:** Announcements\
**Created:** [January 5, 2024, 1:53pm UTC](https://forum.microlist.org/t/em-waves-part-2-of-photology-for-microscopists/2367 "2024-01-05T13:53:20Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![P\_Tadrous](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.microlist.org/p_tadrous/32/862_2.png) [@P\_Tadrous](https://forum.microlist.org/u/P_Tadrous)\
**Post date:** [January 5, 2024, 1:53pm UTC](https://forum.microlist.org/t/em-waves-part-2-of-photology-for-microscopists/2367/1 "2024-01-05T13:53:20Z")

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Part 2 of my new series is out now on YouTube here:

[![](https://us1.discourse-cdn.com/flex020/uploads/microlist/original/2X/7/7dd44d16b3e2e8e5dd2f190aa322838464068e30.jpeg "Photology 2: Individual EM wave features and interference") ](https://www.youtube.com/watch?v=ux359troB90)

# CONTENTS

00:00 Intro  
00:38 Sinusoid basics: amplitude, frequency, phase.  
04:23 What is a wave train?  
06:09 Polarisation  
07:57 Superposition and ‘interference’  
09:47 Conclusions