WELCOME TO THE WORLD OF KHET

It's the game that combines lasers with classic strategy. It's the game that combines lasers with the classic strategy of chess and the simplicity of checkers. Players alternate turns moving Egyptian-themed pieces having two, one or no mirrored surfaces. All four types of pieces (pharaoh, obelisk, pyramid and djed column) can either move one square forward, back, left, right, or diagonal, or can stay in the same square and rotate by a quarter twist. Each turn ends by firing one of the lasers built into the board. The laser beam bounces from mirror to mirror; if the beam strikes a non-mirrored surface on any piece, it is immediately removed from play. The ultimate goal is to illuminate your opponent's pharaoh, while shielding yours from harm!

Khet - Eye of Horus Beamsplitter Expansion Pack Included.

After you have begun to master the game with one laser, can you up the ante and handle three? The Eye of Horus beamsplitter piece splits one laser beam into two when hit by reflecting half of the beam and transmitting the other half right through for twice the strategy and excitement! With both pieces in play, the beam can be split twice blasting three lasers around the field with one push of the button! Each expansion pack includes two Eye of Horus Beamsplitter pieces, one silver and one red, and a full color booklet including brand new starting setups and science explanations.

Class II laser products

Lasers categorized as Class II cannot harm the retina because the human blink reflex is sufficient to provide protection. The power output is less than 1 mW. They are generally in the wavelength range of 630-6

Education ť The Science of Khet

FOLLOW THE BOUNCING BEAM

Don't be intimidated by Khet's high tech looks; the basic principles behind the game can be understood easily! When a laser beam hits a mirrored surface, it will always bounce at a 90 degree angle. In other words, it will never bounce off at some weird angle into another row, but will always take a right or left turn, depending on which way the mirror is facing, and stay in a straight line until it hits another object as shown in the following picture:

HOW IT WORKS

Just like in pool or billiards, light bounces off at the same angle it hits a mirrored surface. If light hits a surface at a 45 degree angle, it will bounce off at a 45 degree angle. In science terms, the angle of reflection is equal to the angle of incidence.

Khet takes advantage of this principal by positioning all its mirrored surfaces at 45 degree angles relative to the board. Since the light hits at a 45 degree angle, it will then bounce off at a 45 degree angle making the total angle of reflection 90 degrees, or one quarter turn. Now, whenever the beam hits a mirrored surface at any point on the board it will always take a quarter turn in the direction the mirror was aimed and continue on a straight path in the row it was reflected as shown above.

THE SCIENCE OF BEAM SPLITTING

Several ways exist to split light into multiple directions. The Khet "Eye of Horus Beam splitters" use a plastic sheet with a semi-transparent mirrored coating. This coating reflects a portion of the light energy and transmits most of the remaining energy. Beam splitters are used in everyday optical devices such as cameras and CD players. In science experiments, beam splitters are used in laser holography and in several fascinating measurement techniques. For more information check out one of the references at your local library or online.

**NOTE TO INTERNATIONAL BUYERS: THIS GAME WHEN SHIPPED IS 6.5 LBS AND WILL COST $40 TO SHIP INTERNATIONAL.

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