Alternatives to the Rule of 72

The Rule of 72 is a simple calculation tool for investors to use, but it's not necessarily the most accurate. Here are some ...
Bankrate on MSN

Rule of 72: What it is and how to use it

Here’s how the Rule of 72 works: Divide 72 by your expected annual interest rate (as a percentage, not a decimal). The answer is roughly the number of years it will take for your money to double. For ...
MoneyWeek

What is the 4% rule in retirement?

Retirement costs are constantly changing but one rule has stood the test-of-time to ensure retirees don’t run out of money – the 4% pension rule. This has raised fears that people would run out of ...
IEEE

Design and Analysis of a New Asymmetric Consequent-Pole Flux Reversal Dual-PM Excited Machine With Trapezoidal PMs

Abstract: This article proposes a new asymmetric consequent-pole flux reversal dual-permanent magnet (PM) excited machine (ACP-FRDPMM) with trapezoidal PMs (TPMs) to achieve high torque density and ...