Credits for The secret patterns behind string art

Credits for work used in the The secret patterns behind string art sequence.

The following images have been used in the The secret patterns behind string art sequence:

ImageAttribution
Scratch CatAndrés Monroy-Hernández, CC BY-SA 2.0, via Flickr
String Art HeartAbout Personal Creations, CC BY 2.0, via Wikimedia Commons
Quadratic Beziers in string artCmglee, CC BY-SA 3.0, via Wikimedia Commons
Quadratic to cubic Bezier curveCmglee, CC BY-SA 3.0, via Wikimedia Commons
Rubber duck assisting with debuggingTom Morris, CC BY-SA 3.0, via Wikimedia Commons
Going down, Mr. Tyler?RoniLoren, CC BY-NC-SA 2.0, via Flickr
Display Of Colorful Threadsmichaklootwijk, Standard license, via iStock