Free Shots Fired Essay Sample
T he metric system of measurement is easier to use than the English system because the metric system is a base 10 system where conversions are simple and workings or calculations of measurement of different quantities are identical compared to the english system where there is no uniformity and a lot of convertions are done hence needs a lot of memorizing. In the US, the metric system is used.
Weight is the force exerted by an object, while mass is the amount of substance in an object. Weight and mas have several differences, the first difference is the unit (I) which they are measured, mass is measuered in kilograms(SI units) while the SI units of weight is the Newtons. The secong difference uis that mass of an object does not change from one place to another, for example, if an object is taken to the moon, the mass remaains constant because thtere is no matter removed from the object while the weight of an object changes from place to place.
When white light strikes a prism, it is separeted into several colours by a process called dispersion, this is because when light travels from air to the prism, it encounters a surface of different density and it bends, this bending will occur depending on the ferfractive index of the glass prism, different colours will therefore be refracted differently and as they move out of the prism, they travel at different angles.
The first factor that has made it hard for the criminalists to compare glass sample is that almost all the glasses have similar refractive indixes, and the small sizes of the glass samples make them hard to be compared. In a case where the scene of crime has not been ascertained, soil is of great importance because it will be used to link to a location where the type of soil is found and even the route that the victim of crime had used.