Basically phase is an angle of line joining the origin and the any point on the wave with $x$ axis of our reference frame and the word phase is defined for the single wave function. But the phase difference is defined for two waves.
To become a Certified Construction Manager (CCM), you must have a requisite amount of experience and/or education. ONE of the following: An undergraduate (4-year BA/BS level) or graduate qualifying degree. A 2-year undergraduate qualifying degree (AA/AS level) AND 4 years experience in general design/construction.
What steps do I need to take to be a construction contractor? Step 1: Earn an Associate's Degree. Step one is to earn an associate's degree. Aspiring construction contractors who have completed high school or the equivalent can enroll in an associate's degree program in a field such as construction management or construction technology.