Physics ppt on crystal

1. LIQUID CRYSTAL
DISPLAY (LCD)
Submitted to :
Dr. G.P. Sati
Presented by :
ABHISHEK SINGH
D.El.Ed 2nd Sem
Roll No. - 03

2. INTRODUCTION
University has invested heavily in modernizing
classrooms & halls to take advantages on
instructional technology in LCD projectors. LCD is
used with a computer to project an image on a
screen or a blank wall & provide more instruction
flexibility in the types of content that can be used in
classroom.

3. DEFINITION
LCD is a display technology uses road shaped
molecules [ liquid crystals ] used in digital
watches, laptops, mobile phones & other
electronic devices.

4. P
ARTS

5. FUNCTIONING OF LCD
Utilizes two sheets of polarizing materials, with a
liquid crystal solution between them. An electric
current passed through the liquid causes the crystal
to align so that light can’t be passed through them.

6. INSTRUCTIONS
• Opening slide must be a title/main theme.
• Use slides to tell a story
.
• Involve students in discussion of visuals.
• Use animations or sound clips.
• Avoid use too many slides.

7. GUIDELINES
•Limit number of slides.
•Ensure text contrast.
•Standardized position, colors & styles.
•Use transition effects with in limit.

8. ADVANTAGES
•Easily made using PowerPoint.
•Accessible to students.
•Use for teaching- learning activity.
•Make class interesting.
•Draws students attention.
•Content retained in memory.
•Live presentation.

9. DISADVANT
AGES
•Expensive.
•Requires electricity.
•Repeated slides bored students.
•Time consuming.