Recent questions tagged crystal

Description : Anthurium - Crystal Anthurium, Flamingo Flower, Flamingo Plant, Tail Flower (Anthur'ium)

Last Answer : DESCRIPTION: These plants are mainly from tropical America. They are grown for their brightly colored flower spathes or their ornamental leaves. Anthurium andraeanum is a native of Columbia that has orange-red spathes ... A. scherzerianum; A. scandens; A. toscane A. veitchii; A. Xlilacina,.

Description : Why Crystal Is A Preferred Clock Source?

Last Answer : Answer :Because of high stability, large Q (Quality Factor) & the frequency that doesn’t drift with aging. Crystal is used as a clock source most of the times.

Description : How To Make Crystal Garden

Last Answer : Materials 6 tb Salt 6 tb Bluing - liquid 6 tb Water 1 tb Ammonia Food coloring Instructions Combine salt, bluing, water and ammonia. Pour over small pieces of rock or coal in a shallow GLASS ... on top, if desired. Crystals will begin to grow soon. Add water occasionally to keep crystals growing.

Description : How To Make A Crystal Spheres

Last Answer : MATERIALS NEEDED: STYROFOAM* Brand Foam: Ball, any size (sizes shown are 2-1/2″, 3″, and 4″) Other Materials: Micro-bead mixture, one package Silver glitter Double-sided adhesive, tape ... exposed adhesive to completely cover ball. 3. Sprinkle silver glitter over ball to fill areas between beads.

Description : How to Clean Crystal

Last Answer : How to Clean Crystal Everyone wants their crystal possessions to shine and gleam all the time, and for this, proper cleaning is very important. Cleaning crystal is an easy task, if you have careful hands and ... these easy tips and you're sure to have lovely crystal items to show off all the time.

Description : crystal oscillator and its applications.

Last Answer : Need: Any circuit that generates an alternating voltage is called an oscillator. To generate ac Voltage, it takes energy from the dc source. 1. In some applications voltages of low frequency are required where ... generate clock in digital systems.  It is used as sweep circuits in TV and CRO.

Description : Draw the circuit diagram of crystal oscillator and explain its working.

Last Answer : To excite a crystal for operation in the series-resonant mode it may be connected as a series element in a feedback path, the crystal impedance is the smallest and the amount of positive feedback is the largest. ... which is good.  The resonant frequency is given as  Fo = 1/( 2 π √LC ) 

Description : In a single crystal of an intrinsic semiconductor, the number of free carriers at the Fermi level at room temperature is: A) Half the total number of electrons in the crystal B) Zero C) Half the number of atoms in the crystal D) Half the number of free electrons in the crystal

Last Answer : In a single crystal of an intrinsic semiconductor, the number of free carriers at the Fermi level at room temperature is: Zero 

Description : Liquid Crystal Display (LCD)

Last Answer : Liquid Crystal Display (LCD) LCD stands for Liquid Crystal Display. It is a flat panel electronic display device which uses light modulating properties of liquid crystal. ... pixel and passive pixel display do not consist of switch at each pixel.