Dr. Colin Purrington: Dr. Colin Purrington is a professor at Hudson University, on his personal website he shares templates and tips for creating academic research posters.
I know we are often tempted to just do a google search for images, however, there are some issues with this. Often the images are protected by copyright or are very low resolution. These are a few of my favourite websites to find images for your presentations that are high resolution.
Unsplash: Beautiful, free images and photos that you can download and use for any project. Better than any royalty free or stock photos.
Pexels: Free stock photos & videos you can use everywhere. Browse millions of high-quality royalty free stock images & copyright free pictures.
Wikimedia Commons: Wikimedia Commons is part of the non-profit, multilingual, free-content Wikimedia family.
Flikr Creative Commons: Many Flickr users have chosen to offer their work under a Creative Commons license, and you can browse or search through content under each type of license.
Flikr: The Commons: The key goal of The Commons is to share hidden treasures from the world's public photography archives.
Science.gov Image Search: Science.gov searches over 60 databases and over 2,200 scientific websites to provide users with access to more than 200 million pages of authoritative federal science information including research and development results. Once you conduct a search, click on "multimedia" for images from NASA and other well-known scientific research agencies.
ZU Library’s Image Databases: Zayed University has many databases with images and videos that you can use in your presentations. Just make sure that you've included the appropriate citations, so that creators may have credit for their work.
The Artstor Digital Library is a nonprofit resource that provides over 1.6 million digital images in the arts, architecture, humanities, and sciences with an accessible suite of software tools for teaching and research.