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Scientific Method
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How the laws of science are made and what is meant by scientific method.

Pradeep Kshetrapal
State topper in school exams, selected in IIT Kharagpur, M.Sc., 30 yrs in teaching.

U
Unacademy user
sir is this a very important chapter from the board point of view? my teacher has decided not to start with this chapter first as it is less important it seems.
Mi
sir please try to use both Hindi and English.....
Mi
sir please try to use both Hindi and English.....
Sir please teach in Hindi also...
sir i buy your lecture from your gmail but noone reply me after payment your phone number is not working
Pradeep Kshetrapal
7 months ago
Please register at pkshetrapal52@gmail.com and not on this plateform
P
Pooja
5 months ago
sir no words to describe of ur teaching methods sarre duniya kone me aapka video dekh rahe sir all students in Karnataka and India alll over world iam abiggggggggg fan of u
P
Pooja
5 months ago
explain in board please please please please please
  1. PHYSICS CLASS XI +1j Chapter 1 Physical Worlod Lecture no. XI-1-1 Physical world and Scientific method Physics by Pradeep Kshetrapal


  2. In our life we experience many worlds Our family, town, country, Work place and society makes our SOCIAL WORLD Notes and voice: Pradeep Kshetrapal


  3. Our learning, thinking, education, personal likes, and beliefs make our PSYCHOLOGICAL WORLD Notes and voice: Pradeep Kshetrapal


  4. Nature has given us PHYSICAL senses with which we can Notes and voice: Pradeep Kshetrapal 4


  5. 1. SEE (with eyes) Notes and voice: Pradeep Kshetrapal


  6. 2. SMELI (with nose) Notes and voice: Pradeep Kshetrapal


  7. 3. TASTE (with tongue) Notes and voice: Pradeep Kshetrapal


  8. 4. TOUCH (with skin) Notes and voice: Pradeep Kshetrapal


  9. 5 SPEAK AND HEAR (with ears and throat) Notes and voice: Pradeep Kshetrapal


  10. PHYSICAL WORLD All Around us Whatever we experience (or perceive) with these 5 physical senses forms the PHYSICAL WORLD Notes and voice: Pradeep Kshetrapal 10


  11. SCIENCE The knowledge of things and happeningsin the nature, and relation amongst them, is organized so that, it become well connected and logical This is Science. Notes and voice: Pradeep Kshetrapal


  12. It is a systematic attempt to understand natural phenomenon and use this knowledge to predict, modify and control phenomena Physics by Pradeep Kshetrapal


  13. Scientific Method Scientific methods are used to observe things and natural phenomena. It includes several steps: Observations . Controlled experiments, .Qualitative and quantitative reasoning, Mathematical modeling, Prediction and .Verification or falsification of theories. Physics by Pradeep Kshetrapal


  14. 5.Mathematical Modelling Tip ater levet y ea water evel,c Time 4500 500 3000 2500 1500 o00 500 1041O 0651970 Notes and voice: Pradeep Kshetrapal


  15. There is no final' theory in science Observations and experiments need theories to support them. Sometimes the existing theory is unable to explain the new observations, hence either new theories are formed or modification is done in the existing theories. . For example to explain different phenomena in light, theories are changed. To explain bending of light a new Wave-theory was formed, and then to explain photoelectric effect help of quantum mechanics was taken, Physics by Pradeep Kshetrapal


  16. There is no unquestioned authority in science Notes and voice: Pradeep Kshetrapal 20


  17. Divisions of Science Natural Sciences can be broadly divided in three branches namely Physics, Chemistry and biology Notes and voice: Pradeep Kshetrapal 21


  18. PHYSICS Physics is a study of basic laws of nature and their manifestation in different phenomenas. Notes and voice: Pradeep Kshetrapal