Unplug The Transformer. Fallow the cable from the transformer to the light bulb connector. There is a silver clip that secures the assembly. Gently pull it up. The black connector and bulb can be pulled out from the housing a few inches Remove the connector from the bulb, pull bulb out carefully. Don't twist or angle the bulb. Be cautious of the quartz sleeve that stands as the only barrier between you and the water. Put in the new bulb and attache connector. Slide assembly back onto housing. Push down the silver clip. Power can be restored after the clip is fastened. Don't turn the light on when the bulb is visible, or if the housing is empty. It is damaging to eyes, and heats quickly without water. Don't remove the silver end caps. Don't worry about the extra o-rings. If the counter doesn't reset, hit the button. No, the water does not need to be off, bulb can be changed without interruption to process, although no microbiological control while light is off. Changing the bulb at regular intervals as recommended. Even if you can "see" the purple light, remember that if we see it its not ultra violet, and the lamp looses is intensity. Don't look at the lamp without proper eye protection.
Ultra violet light or filtering. You cannot put it in an autoclave without cooking it.
When light passes into water, it can be refracted, or bent, due to the change in the speed of light as it moves from one medium (air) to another (water). This bending of light causes the light to change direction as it enters the water. The extent of the refraction depends on the angle at which the light hits the water's surface.
When a pencil is placed in water, the light passing through the water is refracted differently than in air, causing the pencil to appear bent or broken at the water's surface. This bending of light is due to the change in speed of light as it moves from air into water, creating an optical illusion.
The light will change directions (to be closer to the normal) once it hits the water. This is known as refraction which is a property of light. In this case, you have 2 media (plural form of medium). The two are air and water.The reason it changes direction is because air allows a different speed of light than water. Water is denser which is why light can't travel as fast. This change in the speed of light is what causes the light to change direction once it hits the water.In conclusion, after light hits the water, it will change directions (to be closer to the normal) due to the fact that the medium is changed (from air to water) which results in a change in the speed of light.
Light bends or refracts when it goes from water to air because the speed of light is different in the two mediums due to their different densities. This change in speed causes the light to change direction.
The frequency of light remains constant when passing from air to water. However, the speed of light changes due to the change in the medium, causing the wavelength to change. This change in wavelength results in the light bending or refracting at the interface between air and water.
When a beam of light hits water, it can undergo refraction, which causes it to change direction due to the change in speed between air and water. Some of the light may also be reflected off the surface of the water.
Light waves do change speed as they travel from air to water due to the change in the medium's refractive index. In general, light travels slower in water compared to air, causing a change in speed and resulting in the bending of the light waves known as refraction.
Light rays bend in water due to a change in the speed of light as it passes from one medium (air) to another (water) with a different optical density. This change in speed causes the light ray to change direction, a phenomenon known as refraction.
Laser light bends when passing through water due to a change in the speed of light as it enters a medium with a different refractive index. This change in speed causes the light to change direction, a phenomenon known as refraction.
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A ray of light will change direction when going out of water, into the air. This is called "Refraction".A ray of light will change direction when going out of water, into the air. This is called "Refraction".A ray of light will change direction when going out of water, into the air. This is called "Refraction".A ray of light will change direction when going out of water, into the air. This is called "Refraction".