• Heureka moments

    Hilarious, funny and startling science tricks


    Heureka moments are videos of hilarious, funny and startling scientific tricks. They remind us of the essence of science – playful experimentation and the joy of discovery. Many of the tricks you can try out for yourself. Note! The videos are in Finnish.

    On this page you will find the 6 latest Heureka Moments episodes. By going to Heureka's Youtube channel you can watch all episodes.

    Watch all episodes on Youtube

28. DIY rainbow

  • Science facts from the video

    The soap film on the surface of a bubble is an extremely thin layer. When light hits it, some of the light is reflected from the outer surface of the film, while some is reflected from the inner surface. These reflected light waves can reinforce or cancel each other out depending on the wavelength, or color, of the light. This phenomenon is called light interference. That is why the colors seen in a soap bubble are not the bubble's own colors; instead, they are produced by the interaction between light and the thin soap film.

27. Sausage grilling competition

  • Science facts from the video

    In July's Heureka moment, science wizards Mika and Heko compete in a grilling competition. Mika's technique is to build a traditional campfire, while Heko approaches the challenge in a slightly different way. Who can grill the sausage faster?

    Science fact from the video: The tube helps the flame rise higher because warm air rises. This creates a strong air flow in the tube, which constantly brings more oxygen to the fire. The more oxygen is available for combustion, the hotter and more efficient the fire burns. This phenomenon is called the chimney effect.

26. Rainbow chrysanthemum

  • Science facts from the video

    In this video, our science wizards celebrate Pride Month 2026 by dyeing white chrysanthemums in all the colors of the rainbow.

    But which is more effective: adding the dyes directly to a test tube or injecting them into thin tubes in the plant's stem?

    The water-transporting tubes in the plant's stem are called xylem. They carry water, and therefore the dye, to the petals.

25. Festival bracelet

  • Hilarious Heureka moment

    Can a festival bracelet be made into handcuffs? Of course not. Or can they? You'll find out in the video.

24. Ghost Soap Bubbles

  • Science facts from the video

    The experiment combines chemistry and physics in a spectacular way. When carbon dioxide ice is added to a suction flask containing hot water, it begins to sublimate - that is, to change directly from solid carbon dioxide to gas.

    A hand held over the mouth of the flask prevents the gas from escaping, causing pressure to build up inside the flask. At the same time, the end of a tube is dipped into soapy water in a petri dish. When the tube is lifted out of the liquid, the carbon dioxide escapes and stretches the soap film into a bubble. Bubbles are created as a result of the pressure difference: the gas tries to equalize the difference between the flask and the environment.

23. Heirloom deathblow

  • Science facts from the video

    The experiment is based on a classic trick performed by magicians, in which the ring due to the influence of gravity spins in time and remains hanging on the chain. In the version shown in the video, unlike the traditional version, the tire also has a small gap through which the chain can partially pass through and the tire seems to go through the chain.

    For example, magicians use the laws of physics combined with movement that is too fast for the eye to perceive. Depending on the metal, its melting point can vary surprisingly much.

    For example, mercury already melts at -39 °C and gallium at 30 °C.

Check out our other science experiences to do at home

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  • Heureka-hetket

    Heureka moments

    Heureka moments are videos in which hilarious, funny and startling scientific tricks are performed. They remind us of the ultimate essence of doing science – playful experimentation and the joy of insight. You can test many of the tricks yourself. Note! The videos are in Finnish.

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