Street Science Season 2 Episode 6 Superpower Glue

In Street Science season 2 episode 6, titled Superpower Glue, host Kevin Delaney is back with more experiments and exciting discoveries. This episode is all about the power of adhesives and what makes them so strong.

Delaney kicks off the episode with a simple demonstration of an adhesive in action. He uses super glue to stick a watermelon to a cinder block, showing just how powerful these adhesives can be. From there, he dives deeper into the science behind adhesives and explores what makes them work.

One major focus of this episode is the process of cross-linking, which is what happens when two molecules interact and form a strong bond. Delaney uses various adhesives to demonstrate this process, including a two-part epoxy that he mixes together to see the cross-linking in action. He also explores how different adhesives work better on different materials, using a silicone-based adhesive to stick a piece of plastic to a metal surface.

Another segment of this episode focuses on the world of biomimicry, which involves using nature to inspire technology and design. Delaney meets with a scientist who is studying the feet of geckos, which are able to stick to surfaces even when upside down. This scientist has used the principles of gecko feet to create a new type of adhesive that could have applications in industries such as space travel and construction. Delaney tests out this new adhesive by using it to stick a weight to a vertical surface, and is amazed by its strength.

The episode also features a visit from a group of engineers who have created a new type of glue that is activated by ultraviolet light. This glue has potential applications in the medical industry, as it can be used to seal wounds without the need for stitches. Delaney tries out this new adhesive on a piece of meat and is impressed with how quickly it dries and how strong it is.

Throughout the episode, Delaney also shares some fun facts about adhesives and their history. He learns about ancient adhesives made from materials such as pine resin and beeswax, as well as the first synthetic adhesive, which was created in the early 1900s. He also explores some of the more unusual applications for adhesives, such as using them to stick feathers to a bird in order to study its flight.

Overall, Superpower Glue is a fascinating exploration of the world of adhesives and the science behind their strength and versatility. Delaney's enthusiasm for the subject is contagious, and viewers of all ages will be entertained and educated by the experiments and demonstrations featured in this episode.