# NCERT - 8 - Science :: Light

[Contributor - Anu Nived]

Objective: To teach the students about light, laws of reflection and types of reflections

Subtopics to be covered:

- Laws of reflection

- Types of Reflection

- Kaledioscope

- Parts of our eye and eye care

- Braille system

Learning Outcome:

- Students know what is light, how single and multiple images are formed

- They know how visually challenged persons use Braille system to read and write

- They also know how to care their eyes, diseases affecting eyes, etc.

[Contributor - Kripa S]

[Contributor - Kripa S]

(Source -Smart Learning for All)

https://www.youtube.com/watch?v=vt-SG7Pn8UU (English - Laws of reflection)

(Source - Bodhaguru)

https://www.youtube.com/watch?v=Jo1UZgGTtUs (Hindi - properties of light)

[Contributor - Arshea Bimal]

1. https://www.youtube.com/watch?v=A1Fxa_JI1HQ (what lenses and mirrors do with light)

3. It is possible to cast multiple shadows of an object at the same time. Try to understand how this can be done and try to create this on your own. Observe the intensity of the shadow in this case. Observe the players in a day-night cricket match.

4. Observe and understand how and why the length of the shadow of a light pole changes during the day.

[Contributor - Amitesh Patara]

[Contributor - Deepali Pandey]

[Contributor - Fathima Nazar]

 Term Transliterated Term Translated Term ANGLE OF INCIDENCE ऑंगल ऑफ़ इन्सिडेन्स आपतन कोण ANGLE OF REFLECTION ऑंगल ऑफ़ रिफ्लेक्शन परावर्तन कोण BLIND SPOT ब्लाइंड स्पोट अंध बिंदु BRAILLE ब्रेइल अंधों के पढ़ पाने के लिए उभरा CONES कोन्स शंकु CORNEA कॉर्निया स्वच्छ मंडल DIFFUSED/ IRREGULAR REFLECTION दिफ्फ्यूज़्ड / इरेगुलर रिफ्लेक्शन विसरित / अनियमित परावर्तन DISPERSION डिस्पेरशन विक्षेपण INCIDENT RAYS इंसिडेंट रेज़ आपतित किरण IRIS आईरिस परितारिका KALEIDOSCOPE कलेइडोस्कोप बहुमूर्तिदर्शी LATERAL INVERSION लाटेरल इन्वेर्शन पार्श्व परिवर्तन LAWS OF REFLECTION लौस ऑफ़ रिफ्लेक्शन परावर्तन के नियम PUPIL प्यूपिल पुतली REFLECTED RAYS रिफ्लेक्टेड रेज़ परावर्तित किरण REFLECTION रिफ्लेक्शन परावर्तन REGULAR REFLECTION रेगुलर रिफ्लेक्शन नियमित परावर्तन RETINA रेटिना दृष्टि पटल RODS रोडस शलाका

[Contributor -Amitesh Patara]

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