What is HBO lamp?

“Mercury short arc lamps (aka HBO) are direct-current short-arc gas discharge lamps, in which the electric arc of the discharge takes place in a high-pressure mercury atmosphere.

What is the meaning of HBO in microscope?

HBO is a trademark that means: H for Hg or hydrargyrum; B is the symbol for luminance; O for unforced cooling. The first HBO lamp was developed and produced by Osram in the 1930s. The short arc lamp was primarily used for ultraviolet light pens, and was later developed for use in microscopy and UV curing.

How do mercury arc lamps work?

When electricity is provided to the mercury vapor lamp, an arc of electrical current passes from an electrode on one end of the inner arc tube to the other. This electrical arc is helped to flow through argon gas inside the bulb. Also in there is mercury, which is in liquid droplets inside the bulb.

How does an arc lamp work?

An arc lamp produces light by the sparking (an electrical arc) of a high current between two conducting electrodes, usually carbon rods.

What is bright-field microscopy used for?

It receives light from the light source and is responsible for the concentration of light rays on the object. Bright field microscopy is used to view fixed specimens or live cells.

What is the principle of bright-field microscopy?

Principle of Brightfield Microscope For a specimen to be the focus and produce an image under the Brightfield Microscope, the specimen must pass through a uniform beam of the illuminating light. Through differential absorption and differential refraction, the microscope will produce a contrasting image.

Can you replace a mercury vapor bulb with LED?

LED corn cob lights are one of the most efficient ways to replace metal halide, mercury vapor, and high-pressure sodium HID bulbs.

Is the arc lamp still used?

The carbon arc lamp is now obsolete for most of these purposes, but it is still used as a source of high intensity ultraviolet light. The term is now used for gas discharge lamps, which produce light by an arc between metal electrodes through a gas in a glass bulb.

What are the advantages of arc lamp?

Advantages of Arc Lamp Arc lamps produce bright light. Arc lamps can illuminate a large surface area such as a large length of streets, large factories, etc. Arc lamps are cheaper than other street lamps, oil lamps, and gas discharge lamps.