Microscopic Coloring Book


A scanning electron microscope (SEM) is an exciting tool for exploring the tiniest microscopic details of the world around us. But because the microscope uses electrons to create and image, rather than light, the resulting images have no color. 

Help us add color to our growing collection of SEM images of everyday (and not so every day) things in our community-wide project. Visit our online gallery of black and white images, select one or more to download, then colorize them to life following our easy-to-follow instructions. Once finished, upload your image to our SEM image showcase to share your creations!



1. View, choose, and download any of our SEM images.

2. Follow our instructions to learn how to colorize your images.

3. Share your completed images on Instagram by posting them with the hashtag #30DaysOfScience and tagging @CambSciFest. Or, submit your images using this Google Form. We’ll be posting selected images on our social media channels!

Access everything you need for these steps here:
SEM Images, Colorization Instructions, and Shared Examples.


Need some help or want to learn more about the SEM? Join us for one or all of our free, live SEM sessions as we capture new images. Then drop in for some tips on colorization during one of our tutorial help sessions. 

SEM Explorations
Tuesday, April 6, 6–7:00 pm 
Tuesday, April 13, 6–7:00 pm 
Tuesday, April 20, 1–2:00 pm 

Colorization Tutorials 
Thursday April 8, 6–7:00 pm 
Thursday April 15, 6–7:00 pm 
Thursday, April, 22, 1–2:00 pm 

Pre-register for these sessions on Eventbrite.

This experience is made possible by the Hitachi High-Tech SEM Loan Program. 


The MIT Museum aims to make its online programs accessible to as many individuals as possible. Live closed captioning services (CART) will be provided when requested at least two weeks in advance of a program. Please email mitmuseum-access@mit.edu to request CART services or suggest other accommodations that would help you fully participate in this program.