Light
Invisible Sunblock
In this activity, learners compare nano and non-nano sunblock products to discover the effect of particle size on visibility.
Product
![Large blue and orange interactive exhibit that features the properties of blue butterfly wings on the nanoscale. Exhibit has three boxes with preserved butterflies under a light and a large sign going into detail on nanostructures](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/images/catalog/1638/v2.0_changing_colors_1.jpg?h=a5b6522a&itok=AlkQ4DkI)
Changing Colors exhibit
An exhibit that was part of the Nanotechnology: What's the Big Deal? exhibition that shows how some high-tech nanomaterials mimic natural phenomena.
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![A family looks at an image through a blue filter](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/2022-02/ExSci_Space_20180929_1190_edit.jpg?h=3d346970&itok=-dNccHVd)
Exploring the Universe: Filtered Light
In this activity, learners discover how colored filters can help reveal more about an image and we can use light and filters to learn more about an object.
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![Photo of the materials used in the Exoplanet Transits activity](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/6_exoplanet_transits.jpg?h=deaec4b9&itok=Vt3nb0bG)
Exploring the Universe: Exoplanet Transits
In this activity, learners model one method to search for exoplanets by using a lightbox and mystery objects.
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![NISE Net calendar art](https://nisenet.org/sites/default/files/styles/curated_list_large/public/2020-12/nisecalendar.png?itok=e73BlQCK)
Calendar of Seasonal Events and Holidays - STEM Throughout the Year!
Educators can find ideas for incorporating STEM content into holidays, seasons, annual events, and special events throughout the year.
Product
![Hands holding square of polarizers and transparent tape](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/images/catalog/20140907GH1_149-1.jpg?h=6e097db3&itok=nGRgb_cw)
Exploring Materials - Polarizers
In this activity, learners experiment how polarizers affect light by using two polarizing sheets and overlapping layers of transparent tape.
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![Blue logo for online workshop recordings](https://nisenet.org/sites/default/files/styles/curated_list_large/public/2020-12/online-workshop-recordings-logo.jpg?itok=9FGQyoMy)
Online Workshop Recording: Nano Brown-Bag: The International Year of Light 2015 - What's Nano about Light?
Online professional development workshop recording focused on the International Year of Light (2014).
Product
![Blue logo for online workshop recordings](https://nisenet.org/sites/default/files/styles/curated_list_large/public/2020-12/online-workshop-recordings-logo.jpg?itok=9FGQyoMy)
Online Workshop Recording: Nano Brown-Bag: The Science Behind NanoDays 2013 - Part 2
Online professional development workshop recording (2013).
Product
![a group of learners build UV color changing beaded bracelets](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/2022-02/20151009_1142.jpg?h=265e640d&itok=nhC3c3sK)
Exploring Properties - UV Bracelets
In this activity, learners use ultraviolet light to change the color of beads that contain photochromic dye.
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![Girl looking at objects in a beaker filled with liquid that appear to be invisible](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/images/catalog/11070/invisibility_2.jpg?h=e4c0da04&itok=Nb5ewATQ)
Exploring Properties - Invisibility
In this activity, learners investigate how glass objects can be "hidden" in some liquids through refraction.
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