The transmitted light is polarized in one plane. If this polarized light is incident upon a second polarizer, the axis of which is oriented such that it is perpendicular to the plane of polarization of the incident light, no light will be transmitted through the second polarizer. However, if the second polarizer is oriented at an angle not perpendicular to the axis of the first polarizer, there will be some component of the electric field of the polarized light that lies in the same direction as the axis of the second polarizer, and thus some light will be transmitted through the second polarizer. This is shown in the following image.

They are a staple in any sensory space due to their versatility, durability, and the benefits they deliver for those with sensory challenges.

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If the polarized electric field is called E1 after it passes through the first polarizer, the component, E2, after the field passes through the second polarizer which is at an angle φ with respect to the first polarizer is E1cosφ. Since the intensity of the light varies as the square of the electric field, the light intensity transmitted through the second filter is given by (Malus law) :

Polarization is a property applying to transverse waves that specifies the geometrical orientation of the oscillations, In a transverse wave, the direction of the oscillation is perpendicular to the direction of motion of the wave. Transverse waves that exhibit polarization include electromagnetic waves such as light and radio waves, gravitational waves, and transverse sound waves (shear waves) in solids.

Our superactive sensory fiber optic products transition from color to color, which encourages visual tracking and color recognition. The user can even control the colors via a wireless controller. This can benefit users who want to have control over their environment and can strengthen fine motor skills and understanding of cause and effect.

For the verification of the Malus law we used the He-Ne laser, a polarizing filter and the analyzer filter mounted on the rotating support described above. The light intensity transmitted by the filter was measured by a photodiode sensor. In order to exclude the environmental brightness and improve the sensitivity of the measurement, a 633 nm interference filter was used, coinciding with the laser emission wavelength. All placed on our crafted optical table. More details on the equipment used can be found in the following posts : DIY Optical Table, PSoC based Photometer. The images below show the setup, with the detail of the sensor + filter.

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Abstract: in this article, we present the design of a cosmic ray detector based on a plastic scintillator and photomultiplier. The pulses produced by the interaction of cosmic rays are acquired using the Red Pitaya microcomputer. The Red Pitaya's high sampling rate and the possibility of subsequent software processing of the acquired pulses make it possible to measure the decay time of the muons that come to rest inside the scintillator.

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If you need guidance choosing the best sensory fiber optics product for your space, just get in touch with our team who are always happy to help.

Fiber optic lights are truly mesmerizing and will easily capture the attention of its users. This is calming in itself and can soothe individuals experiencing restlessness, anxiety, or sensory overload. A calming environment can also help to encourage individuals with ASD to communicate.

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An electromagnetic wave such as light consists of a coupled oscillating electric field and magnetic field which are always perpendicular; by convention, the “polarization” of electromagnetic waves refers to the direction of the electric field. In linear polarization, the fields oscillate in a single direction. In circular or elliptical polarization, the fields rotate at a constant rate in a plane as the wave travels. The rotation can have two possible directions; if the fields rotate in a right hand sense with respect to the direction of wave travel, it is called right circular polarization, while if the fields rotate in a left hand sense, it is called left circular polarization. The image below shows a wave with linear polarization.

The image below shows a wave with circular polarization : the electric field vector could be thought as the vectorial sum of two vectors, along the two perpendicular axis, oscillating with different phase.

We know that to experiment with light polarization it is necessary to have a rotatable support to hold the polarizing filter, such equipment are really expensive ! But everything changed when we found on eBay a simple rotatable platform for a robotic arm, the following picture shows the”gadget” (search online for rotatable “platform for robotic arm”) :With such a tool we realized that it was possible to assemble a very simple (and cheap) yet precise rotatable support for the filter : the result is shown in the cover image.

Fiber optic sensory lights are a great way to enhance a sensory space, and there are so many colors, shapes, and sizes to choose from, including our fiber optic carpet, fiber optic softie, and many more!

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Fiber optics lighting can be incorporated into any multisensory room, whether that’s at home, school, or a care facility. You can even incorporate sensory fiber optics into a sensory corner, for example, by mounting a fiber optic wall cascade in the corner or installing our fiber optic corner shower.

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Anybody can enjoy LED fiber optics, however our sensory fiber optics products are specifically designed for special populations with sensory challenges. We have a range of fiber optics lighting items that provide beneficial sensory stimulation for individuals with ASD, sensory processing disorder, Dementia, and other cognitive difficulties.

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A polarizer is an optical filter that lets light waves of a specific polarization pass through while blocking light waves of other polarizations. A polarizer only allows light which is vibrating in a particular plane to pass through it. This plane forms the “axis” of polarization. Unpolarized light vibrates in all planes perpendicular to the direction of propagation. If unpolarized light is incident upon an “ideal” polarizer, only half of the light intensity will be transmitted through the polarizer.

Our LED fiber optics also feature in many of our sensory room packages, which offer a quick and effective solution to creating a multisensory space of your own.

Experia’s fiber optic sensory lights are made in the USA using the latest LED technology, so there’s no need to change lamps. Our sensory fiber optics appeal to all ages and abilities as no electricity is present in any fiber optic product, meaning they are inherently safe to use and touch. As a result, these fiber optic sensory lights are not only great for visual stimulation, but they are also great for tactile stimulation.

Sensory fiber optic products, such as fiber optic sensory lights, create a fabulous visual effect while being tactile and safe to touch.