### Dimensionless Numbers

Dimensionless Numbers in Hydraulics and Fluid Mechanics - The important dimensionless numbers are Reynold's number, Froude's number, Weber's number, Euler's number and Mach's number:

(a) Reynold's number: It is the ratio of the inertia force to the viscous force.

(b) Froude's number: It is the ratio of the inertia force to the gravity force.

(c) Weber's number: It is the ratio of the inertia force to the surface tension force.

(d) Euler's number: It is the ratio of the inertia force to the pressure force.

(e) Mach's number or Cauchy's number: It is the ratio of the inertia force to the elastic force.

1. Good and useful it

2. euler number is the ratio of pressure force to the inertia force but here the formula is reverse!! Which one is correct

1. U r currect... That's mistake

### Are Engineers Favourite Among Girls?

What do girls think about men who are engineers and what type of engineers are most favourite among girls? A survey was conducted by a team of aboutmech with members chosen from different countries. Each team member carried out a neutral survey in his/ her country to evaluate what females think about most of the engineers from different engineering branches. An overview of different questions asked in survey is given below: Question: Which male engineers do you find more attractive as a husband? Almost 50% women voted for mechanical engineers to be the most attractive husbands among other engineers. So mechanical engineers are most favourite among girls as a husband. They find them more trustworthy, intelligent, and creative. A married women from California said, “If your husband is a mechanical engineer, he will help you in everyday tasks. Because mechanical engineers are good team players and they have creative ideas about everything.” Which male engineers do you find more