It is true that dogs see the world in yellow and blue. A red rag will not make a bull react, because a bull does not identify this colour. Insects see more, while snakes see… warmer. Let us look at the world through the eyes of animals and discover how different it is from our world.
A human eye is a highly advanced apparatus. We have three types of light receptors (RGB – red, green, blue) that enable us to see around a million of colours. Photoresponsive receptors are able to send separate image-related signals to the brain about 60 times per second. That means that, on average, a human eye records 60 images within only one second, which gives the impression of continuous motion.
Humans see in a stereoscopic way and our vision cover the angle of about 114 degrees. Animals see differently. Using numerous filters and cameras, we will attempt to look at the world through their eyes. We will see the reality the way it is perceived by majority of mammals – without red and similar colours, which lets them recognise shapes and patterns better. The photosensitive receptors in insects’ eyes allow them to receive and transfer the signal more quickly. A small dragonfly is able to see about 300 images per second. We will use a slow-motion camera to imitate its vision. Some other insects, but also Caribou reindeer, for example, are able to see the UV light. That is why, insects can recognise flowers that are ready to be pollinated, while reindeers can see wolves that hunt them in the snow.
The vision of snakes is yet different, because they see infrared, which enables them to hunt warm-blooded prey at night. We will be able to learn about their abilities by using special cameras.
A piece of cardboard and lens from a laser indicator is all we need to change a smartphone into a real microscope. Then, we will use it to look at daphnia, leaves, crystals, and will also take some unique photos.
This simple device will give us quite many possibilities. The most popular method of microscope observations is the bright field microscopy – the rays of light pass through the sample from the source to the lens in the phone. When the device is on a table covered with a dark fabric and is illuminated from one side, than we call it the dark field observation. This method enables us to clearly see the inside of a transparent object. We will also have the chance to learn about polarisation and fluorescence microscopy.
A photosensitive paint and the sun will help us to create unique patterns on T-shirts and napkins.
To create artistic designer compositions we will use cardboard templates, parts of plants and any accessories of our spontaneous choice. Next, the design will be covered by a piece of plexiglass and left in the sun for less than ten minutes. Do not worry, if the weather is unfavourable, we will use a UV lamp.
Is it possible to see a particle of light? What is a colour? How the light is refracted?
Looking for answers to these questions will be colourful and explosive.