Many amateurs are beginners or hobbyists, while others have a high degree of experience in astronomy and often assist and work alongside professional astronomers.

Many amateurs like to specialise in observing particular objects, types of objects, or types of events which interest them.

Many amateurs make valuable contributions in the field of computer programming through the open source movement.

Many SETI League members are licensed radio amateurs and microwave experimenters.

Many astronomers after the time of Galileo built their own telescopes out of necessity, but the advent of amateurs in the field building telescopes for their own enjoyment and education seems to have come into prominence in the 20th century.

Many highly educated amateurs now also travelled to Egypt, however, including women such as Harriet Martineau and Florence Nightingale, who both left fascinatingly philosophical accounts of their travels, which revealed learned familiarity with all the latest European Egyptology.

Many contemporary marine architects and backyard amateurs have been experimenting with the dory type and refining the type to some extent.

Many professionals or interested amateurs now consult extensive benchmark tests to determine system performance on various applications.

Many of these composers were amateur singers who developed new forms of sacred music suitable for performance by amateurs, and often using harmonic methods which would have been considered bizarre by contemporary European standards.

Many officers ( often the gentlemen amateurs ) of existing units merged into regiments of the New Model Army became surplus to the organization and were discharged.

Many were talented amateurs, hired on the basis of level designs they had created.

Many other utilities exist to convert latitude and longitude to locators, as this is a favorite hack for programmers who are also radio amateurs.

Many professional photographers and advanced amateurs prefer digital single-lens reflex cameras which have a true optical through-the-lens viewfinder ( OVF ).

Many professionals and amateurs visit the city to practice their favourite types of sports on the shores including beach soccer, beach volleyball, wind-surfing and other types of water sports through numerous swimming beaches and facilities along the entire Sevan shore, such as the aqua-park, the horse club, the tennis courts, the mini football and basketball fields.

Many amateurs attribute this to the fact that there was an abundance of commercial radio equipment designed for 136 – 174 MHz and 450 – 512 MHz that amateurs could easily modify for use on 2 meters and 70 centimeters.

Many amateurs have found the 33 centimeter band to be ideal for linking repeaters together.

Many of these composers were amateurs, and many were singers: they developed new forms of sacred music, such as the fuguing tune, suitable for performance by amateurs, and often using harmonic methods which would have been considered bizarre by contemporary European standards.

Many overconfident amateurs have been known to run tallies of well over a hundred attempts.

Many LowFERs are also licensed radio amateurs, although an amateur radio license is not required for LowFER communications in those countries.

Many of their members were amateurs, but a considerable percentage were professionals, including journalists, military personnel, scientists and medical doctors.

Many radio amateurs are happy to contest from home, often with relatively low output power and simple antennas.

Many states have laws regulating the use of boat trailers and some have restrictions regarding the age of motor boat operators.

Many of them sincerely believe that the use of liquor in any form or in any degree is intrinsically evil and sinful.

Many people use wicker cradles for old red wine, lifting the bottle carefully from the bin into the cradle and eventually to the table, without disturbing the sediment.

Many languages use modified forms of the Latin alphabet, with additional letters formed using diacritical marks.

Many contemporary Pueblo peoples object to the use of the term Anasazi, although there is still controversy among them on a native alternative.

Many British publications have gradually done away with the use of periods in abbreviations.

Many parents use a collection of simplified or ad hoc signs called " baby sign.

Many countries, including some US states, also permit the use of less severe corporal punishment for children in school.

Many such are localised, and do not form part of general Australian use, while others, such as kangaroo, boomerang, budgerigar, wallaby and so on have become international.

Many of Canberra's suburbs are named after former Prime Ministers, famous Australians, early settlers, or use Aboriginal words for their title.

Many ironclads were built to make use of the ram or the torpedo, which a number of naval designers considered the crucial weapons of naval combat.

Many were in common use, but had become unacceptable in normal discourse before the end of the twentieth century.

Many drugs produce an antidepressant effect, but restrictions on their use have caused controversy and off-label prescription is a risk, despite claims of superior efficacy.

Many dual system television receivers, equipped to receive both analog transmissions and digital transmissions have analog tuner ( television ) receiving capability and must use a television antenna.

Many areas average of rain per week, and these can use a cistern as small as.

Many autonomous homes can reduce water use below per person per day, so that in a drought a month of water can be delivered inexpensively via truck.

Many coal-burning power stations use flue-gas desulfurization ( FGD ) to remove sulfur-containing gases from their stack gases.

Many types of applications use variables representable in eight or fewer bits, and processor designers optimize for this common usage.

Many players, however, prefer to use replacement grips as the final layer.

Many players use a backhand hitting action for returning smashes on both the forehand and backhand sides, because backhands are more effective than forehands at covering smashes directed to the body.

Many of those that have been properly examined show that they continued in use for many centuries, although the interiors were often modified and changed, and they underwent many phases of habitation and abandonment.

Many Internet sites use information and images from the CIA World Factbook.

Many later CPU designs use similar mixed bit width, especially when the processor is meant for general-purpose usage where a reasonable balance of integer and floating point capability is required.

Many printer drivers do not use the text mode at all, even if the printer is capable of it.