Scientific notation and SI units are used in measurement to help scientists communicate measurements clearly across countries. The basic SI units include meters, kilograms, seconds, amperes, moles, candelas, and kelvins. Derived units are calculated from the basic units, such as newtons from kilograms and meters/seconds. SI prefixes modify the scale of units, from centi to giga. The precision of calculations is limited by the measurement with the fewest significant figures. Temperature in kelvins is calculated by adding 273 to degrees Celsius.
Basics of Unit and Measurements. Leave a comment on my slide and tell me what you think! You are free to download this slides for your needs. Hope this was useful to you guys!
The presentation covers, Dimensions and standards, SI Unit system, Definition of basic units, SI Temperature Scale, Other Unit System, Non SI Units in common Uses, Scientific Notations, Prefixes, Significant figures
Basics of Unit and Measurements. Leave a comment on my slide and tell me what you think! You are free to download this slides for your needs. Hope this was useful to you guys!
The presentation covers, Dimensions and standards, SI Unit system, Definition of basic units, SI Temperature Scale, Other Unit System, Non SI Units in common Uses, Scientific Notations, Prefixes, Significant figures
This presentation covers measurement of physical quantities, system of units, dimensional analysis & error analysis. I hope this PPT will be helpful for instructors as well as students.
Your science teacher has just asked you to solve some problems using dimensional analysis….OMG! What is dimensional analysis??
Don't sweat it! Dimensional Analysis (DA) is just a fancy term for converting one unit to another.
You use dimensional analysis in all the sciences from biology to chemistry and physics. You use DA anytime you need to convert one unit to another unit.
Just think "measurements need to have two parts - a number and a unit". For example, if you said "My heart beats 60" that would make no sense! Do you mean 60 beats per second or 60 beats per minute? At 60 beats per second you are probably in good health. But at 60 beats per minute, you could be a very sick person!
That's why measurements in science are composed of two parts - the quantity or numerical part and the dimension. The dimension can be time and distance, length, weight and mass, temperature, area, etc
This presentation covers measurement of physical quantities, system of units, dimensional analysis & error analysis. I hope this PPT will be helpful for instructors as well as students.
Your science teacher has just asked you to solve some problems using dimensional analysis….OMG! What is dimensional analysis??
Don't sweat it! Dimensional Analysis (DA) is just a fancy term for converting one unit to another.
You use dimensional analysis in all the sciences from biology to chemistry and physics. You use DA anytime you need to convert one unit to another unit.
Just think "measurements need to have two parts - a number and a unit". For example, if you said "My heart beats 60" that would make no sense! Do you mean 60 beats per second or 60 beats per minute? At 60 beats per second you are probably in good health. But at 60 beats per minute, you could be a very sick person!
That's why measurements in science are composed of two parts - the quantity or numerical part and the dimension. The dimension can be time and distance, length, weight and mass, temperature, area, etc
4. Basic Units of Measure Candela- cd Luminous intensity Ampere- A Electric current Mole- m Amount of substance Second- s Time Kelvin- K Temperature Kilogram- kg Mass Meter - M Length
5. Derived Units 2 3 2 2 2 2 2 m/s Acceleration (a) kg*m/s Force- Newton (N) kg*m/s Energy- Joule (J) m/s Speed (V) kg/m Density m Volume m Area
6. SI Prefixes hundredth .01 c centi tenth .1 d deci thousand 1,000 k kilo million 1,000,000 M mega billion 1,000,000,000 G giga Meaning Multiple Symbol Prefix
