How Does the Angular Resolution (Sharpness)of the Images Obtained from Radio

question 183

Multiple Choice

How does the angular resolution (sharpness) of the images obtained from radio telescopes using very-long-baseline interferometry (VLBI) compare with the typical angular resolution of optical telescopes?

• A) VLBI images are about 10 times less sharp than the best optical images.
• B) VLBI images are much sharper.
• C) VLBI images are much less sharp because of the longer wavelength.
• D) VLBI images have about the same resolution as the best optical images, about 0.2 arc seconds.

---

Definitions:

Bond Issue

The process by which a government or corporation raises funds by selling bonds to investors, which are to be repaid with interest at a future date.

Amortizing

The process of spreading out a loan into a series of fixed payments over time.

Bond Discount

The difference when a bond is sold for less than its face value or par value.

Interest Expense

The cost incurred by an entity for borrowed funds, including the expense on bonds, loans, convertible debt, and lines of credit.