Description: 👉 Learn how to evaluate logarithms with fractions. Recall that the logarithm of a number says a to the base of another number say b is a number say n which when raised as a power of b ...

👉 Learn how to expand logarithmic expressions involving radicals. A logarithmic expression is an expression having logarithms in it. To expand logarithmic expressions means to use the logarithm laws ...

Transformation optics (TO) has been a powerful tool to design versatile devices to manipulate the electromagnetic field, started from two pieces of work on invisibility cloak 1,2. TO's fundamentality ...