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Hubble Space Telescope has discovered 16 extrasolar planets candidates in the central region of our Milky Way

How is it possible that two people can talk to each other from opposite metro platforms while standing with their backs turned? According to the phenomenon of reflection, we can transfer information over long distances through a localised band. Learn more about "Long-distance communication" by playing with the two parabolic surfaces in the display

Our eyes do not always perceive the same color in the same way. The environment has a strong impact on how we see since the eye tends to assess color in terms of the scene around it. The eye can also be affected by color perception anomalies, usually hereditary, such as color-blindness.

Our eyes do not always perceive the same color in the same way. The environment has a strong impact on how we see since the eye tends to assess color in terms of the scene around it. The eye can also be affected by color perception anomalies, usually hereditary, such as color-blindness.

Do we see with our eyes or with our brain? With the help of a model and an audio-visual presentation, learn more about the anatomy and function of the eye. Then observe the pupil of your eye in the tube and see how it dilates or contracts as you change the intensity of the light.

The iris is the colored part of the eye with a black opening, the pupil, at its centre. The pupil΄s size varies with the brightness of the light. The pupil contracts when exposed to bright light and dilates when it is dark. At the back of the eye, the retina is lined with two types of light-sensitive cells, called cones and rods because of their distinctive shape. The two types of cells do not have the same sensitivity to the light spectrum. When they are excited, a nerve signal is sent to the brain through the optic nerve.

The anatomy of the ear includes three parts : the external ear that captures and channels sounds ; the middle ear that increases the intensity of the waves and turns them into mechanical vibrations; and the inner ear that codes the vibrations into nerve impulses transmitted to the brain

Softer or louder… sound level is measured in decibels (dB). Hearing tests conducted in laboratories in a controlled sound environment have shown that the smallest change in level that can be perceived by the human ear is about one decibel. This sensitivity diminishes at low volumes and with very low or very high-pitched sounds.

Sound frequency and wavelength are related. Frequency measures the number of compression dilation cycles per second and is expressed in hertz. The higher the frequency, the shorter the wavelength and the higher the pitch of the sound. Laboratory tests have shown that the human ear can perceive sound between 250 and 5,000 hertz at best.

When we speak or sing, we hear the sound of our own voices. This auditory feedback allows us to control our vocal system and plays an essential role in speech learning. Children who have been deaf since birth are not dumb but they can only articulate

Some sounds in nature are unfamiliar either because they are too faint to be heard, or because the source is in a place where people do not normally go. An acoustic signal picked up by specially-designed microphones can be converted into an electric signal to yield optimal sound reproduction. The microphone must be adapted to the sound that is meant to be recorded, be they sounds under the sea, distant sounds to be isolated, or atmosphere sounds.

Some sounds in nature are unfamiliar either because they are too faint to be heard, or because the source is in a place where people do not normally go. An acoustic signal picked up by specially-designed microphones can be converted into an electric signal to yield optimal sound reproduction. The microphone must be adapted to the sound that is meant to be recorded, be they sounds under the sea, distant sounds to be isolated, or atmosphere sounds.

Some sounds in nature are unfamiliar either because they are too faint to be heard, or because the source is in a place where people do not normally go. An acoustic signal picked up by specially-designed microphones can be converted into an electric signal to yield optimal sound reproduction. The microphone must be adapted to the sound that is meant to be recorded, be they sounds under the sea, distant sounds to be isolated, or atmosphere sounds.

Some sounds in nature are unfamiliar either because they are too faint to be heard, or because the source is in a place where people do not normally go. An acoustic signal picked up by specially-designed microphones can be converted into an electric signal to yield optimal sound reproduction. The microphone must be adapted to the sound that is meant to be recorded, be they sounds under the sea, distant sounds to be isolated, or atmosphere sounds.

Can music be produced without the use of a musical instrument? Is it possible to wave my arms in the air and compose music? The answer is "yes": sensors make it possible. Enjoy this unique experience with the "Virtual Percussion Instruments" in the exhibit. Activate the instruments through the movement of your arms or body and create your own music.