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asaduzzaman1975

@asaduzzaman1975

733 followers 153 following 35 posts Reputation 36.82

asaduzzaman1975
@asaduzzaman1975 Jun 10, 2017, 1:05 PM UTC

ELECTROMOTIVE FORCE

The maximum potential difference that exists between the terminals of a cell which is disconnected from the external circuit is called electromotive force. When there is no current in the circuit, th…

2 upvotes 2 replies $0.00
asaduzzaman1975
@asaduzzaman1975 Jun 5, 2017, 10:05 AM UTC

KEPLER SPACE TELESCOPE

It found a earth like planet Kepler-22b which is 600 light years from the earth.

8 upvotes 3 replies $0.00
asaduzzaman1975
@asaduzzaman1975 Jun 5, 2017, 6:06 AM UTC

REDSHIFT

Doppler Effect When there is a relative motion between the source of waves and the observer, the frequency of wave produced by a source and the frequency received by the observer is different. This e…

6 upvotes 2 replies $0.00
asaduzzaman1975
@asaduzzaman1975 Jun 4, 2017, 2:56 PM UTC

Photoelectric Effect

When light of appropriate frequency is incident on a metal, then electrons are emitted from that metal. This process of emission of electrons is called photoelectric emission and the effect is called…

11 upvotes 2 replies $0.00
asaduzzaman1975
@asaduzzaman1975 Jun 4, 2017, 10:26 AM UTC

A GOOD TEACHER

As a teacher, you have to wear many hats. You will, to name but of a few of the roles teachers assume in carrying out their duties, be a communicator, a disciplinarian, a conveyor of information, an…

4 upvotes 1 replies $0.00
asaduzzaman1975
@asaduzzaman1975 Jun 4, 2017, 6:27 AM UTC

Total internal reflection

When light passes from more denser medium to less denser medium, if the angle of incidence is more than critical angle all light reflects to the denser medium from the plane of separation according t…

8 upvotes 1 replies $0.08
asaduzzaman1975
@asaduzzaman1975 Jun 4, 2017, 5:10 AM UTC

resistance of conductor

Resistance of conductor increases with increase in temperature. When temperature of a resistor increases the particles vibrates with greater amplitude. As a result free electrons collides more freque…

9 upvotes 0 replies $0.06
asaduzzaman1975
@asaduzzaman1975 Jun 4, 2017, 5:03 AM UTC

Earth like planet Kepler-22b

First observed transit by Kepler space telescope in May 12, 2009. It is located about 600 light-years from Earth. Kepler-22b's size is roughly twice that of Earth. Its mass and surface composition ar…

6 upvotes 0 replies $0.10
asaduzzaman1975
@asaduzzaman1975 Jun 3, 2017, 10:27 PM UTC

Dream of mondila

Year 2100 Mondila is a girl of 18 years. She is the first baby born in artificial ovary. To design her genetic code scientist took 30 years. She is now studying artificial intelligence. Now she is ru…

4 upvotes 1 replies $0.09
asaduzzaman1975
@asaduzzaman1975 Jun 3, 2017, 9:58 PM UTC

rainbow

This is due to total internal reflection

2 upvotes 0 replies $0.00