MB&F Thunderbolt Wrist watch

Normal wristwatch has a simple work to show the time. In that kind of wrist watch only needed things are a hand of hour and for the minutes and power reservoir to keep track of running time. Thunderbolt HM4 has a hand of hour, minutes, and a power reserve...

Aerogel: Extreme Light Solid

Do you know the extreme light material In solid category? It is Aerogel. It is composed of more than 99% of air by volume.  It also nicknamed as frozen smoke, solid smoke, blue smoke. But don’t get confused for its state….IT IS SOLID.It is derived...

Quiz-12

Here is the quiz for Mechanical Engineers check out your skills.1.) The spindle speed in lathe machine follows………A) Arithmetic ProgressionB) Geometric ProgressionC) Logarithmic ProgressionD) None of Above2.) Size of the shaper machine is given...

BHN is the only unit for Hardness?

HARDNESS is the property of material which refers to the resistance to indentation. Hardness is also refer to the stiffness to the resistance against scratching, cutting, abrasion. If more is the hardness the greater is the resistance to the indentation. Hardness can...