- published: 28 Feb 2014
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A mirage is a naturally occurring optical phenomenon in which light rays are bent to produce a displaced image of distant objects or the sky. The word comes to English via the French mirage, from the Latin mirare, meaning "to look at, to wonder at". This is the same root as for "mirror" and "to admire".
In contrast to a hallucination, a mirage is a real optical phenomenon which can be captured on camera, since light rays actually are refracted to form the false image at the observer's location. What the image appears to represent, however, is determined by the interpretive faculties of the human mind. For example, inferior images on land are very easily mistaken for the reflections from a small body of water.
Mirages can be categorized as "inferior" (meaning lower), "superior" (meaning higher) and "Fata Morgana", one kind of superior mirage consisting of a series of unusually elaborate, vertically-stacked images, which form one rapidly-changing mirage.
Cold air is denser than warm air and has therefore a greater refractive index. As light passes from colder air across a sharp boundary to significantly warmer air, the light rays bend away from the direction of the temperature gradient. When light rays pass from hotter to cooler, they bend toward the direction of the gradient. If the air near the ground is warmer than that higher up, the light ray bends in a concave, upward trajectory.
A chief executive officer (CEO, American English), managing director (MD, British English),executive director (ED, American English) for non-profit organizations, or chief executive is the highest-ranking corporate officer (executive) or administrator in charge of total management of an organization. An individual appointed as a CEO of a corporation, company, organization, or agency typically reports to the board of directors.
The responsibilities of an organization's CEO (US) or MD (UK) are set by the organization's board of directors or other authority, depending on the organization's legal structure. They can be far-reaching or quite limited and are typically enshrined in a formal delegation of authority.
Typically, the CEO/MD has responsibilities as a communicator, decision maker, leader, and manager. The communicator role can involve the press and the rest of the outside world, as well as the organization's management and employees; the decision-making role involves high-level decisions about policy and strategy. As a leader, the CEO/MD advises the board of directors, motivates employees, and drives change within the organization. As a manager, the CEO/MD presides over the organization's day-to-day, month-to-month, and year-to-year operations.
Do you take this woman to be your dear wife
Do you vow to love her the rest of your life
And will you protect her and honor her name
Oh don't cause her heartaches and don't bring her shame
Share with her in poverty with her in wealth
For richer for poorer through sickness and health
All these things the Parson did ask me
And then I whispered I do and I'd do it again
[ steel ]
For I really love her the one I call wife
And I'll go on caring the rest of my life
I'd die to protect her and she'd do the same
I'd cut off my tongue before I'd bring her shame
We may be in poverty may not have wealth
But we stick together through sickness and health
I'll always be thankful till my life is done