Factorising polynomials with a coefficient of x^2 and no HCF. This is an alternative to using the grid method and is also the way I use but laid out nicely so students can follow. I think I prefer it because the grid method is a bit of a magic box in that it is not clear why it works and I think it's really important to avoid that.
Pressure coefficient and Mach contours illustrate the flow past the Space Shuttle Launch Vehicle 60 seconds after liftoff. (Investigators: Reynaldo Gomez, NASA/Johnson Space Center; Stuart Rogers, NASA/Ames; Image: Edward Tejnil, NASA/Ames)
Liquid Sculptures Highlight the Beauty in Fluid Dynamics
Fluid dynamics is beautiful and complex, with no single, simple equation to govern its dynamic behaviour. The mathematics is monstrous, with scaling factors, coefficients, and exponents customized to each fluid to reflect the quirks of its behaviours. Yet in practice, a single splash is simple beauty.
http://chicerman.com carsthatnevermadeit: Nissan AD 1 concept 1975. AD for Advanced Design the AD1 was an aerodynamic mid-engined prototype which had a 0.26 drag coefficient (cd). Cooling air was channeled from the front of the car to the central engine avoiding the need for side-scoops which would have interrupted the smooth flow of air over the cars flanks #cars
http://www.reconsindia.com/blog/cooling-and-insulation-drying-of-electrical-devices/ When transformers get hot, they need to be cooled down to prevent damage on the circuits. Electricity flow generates heat according to the conduction coefficient of a metallic substance. To cool down, they need coolants and external cooling methods. These cooling techniques are described elaborately to give a comprehensive understanding.
Hanna-Instruments HI3001 PEI and PVDF Flow Through Conductivity 4 Ring Probe with Platinum Sensor, DIN Connection, 3m Cable, 3/4" x 1/2" NPT Male by Hanna Instruments. $149.08. The Hanna Instruments HI 3001 is a submersible flow-through four-ring monitoring electro-conductivity (EC) electrode with a negative temperature coefficient (NTC) sensor for Automatic Temperature Compensation (ATC), a nontoxic polyvinylidene fluoride (PVDF) body with polyetherimide (PEI) protective...
LI-NING BADMINTON RACKET HC1200 CARBON FIBER by LI-NING. $89.00. ES Series "Extra Skill" Series is good tool for smart players. Most of them adopt light frame and soft shaft to make the racket more active. Integrating with UHB Shaft and Aerotec-Beam System to reduce the drag coefficient and improve the flexibility of the racket head. You could control your rackets as your wish to create various shots just like the flowing wind, whatever you want in the forecourt and ba...
Entrainment occurs when a turbulent flow captures a non-turbulent flow. It is typically used to refer to the capture of a wind flow of high moisture content, or in the case of tropical cyclones, the capture of drier air. Entrainment is the mixing of environmental air into a preexisting air current or cloud so that the environmental air becomes part of the current or cloud. The entrainment coefficient in clouds is one of the most sensitive variables causing uncertainty in climate models.