29-615: The Ngaio Marsh Theatre is a theatre at the University of Canterbury Students' Association in Christchurch , New Zealand. The Ngaio Marsh theatre was named in honour of Dame Ngaio Marsh , who was a director and patron of theatre, especially Shakespeare , at the University between 1942 and 1969, and indeed the theatre's opening production — Shakespeare 's Twelfth Night — was directed by Marsh in 1967. The theatre replaced
58-562: A theatre building in New Zealand is a stub . You can help Misplaced Pages by expanding it . University of Canterbury Students%27 Association The University of Canterbury Students' Association (UCSA) is a student organisation associated with the University of Canterbury in New Zealand , established in 1894. USCA is funded by students and is governed by a constitution through 12 elected representatives. Since its inception
87-552: A more detailed treatment of this and the above frequency ranges, see Electromagnetic spectrum . Gravitational waves are also described in Hertz. Current observations are conducted in the 30–7000 Hz range by laser interferometers like LIGO , and the nanohertz (1–1000 nHz) range by pulsar timing arrays . Future space-based detectors are planned to fill in the gap, with LISA operating from 0.1–10 mHz (with some sensitivity from 10 μHz to 100 mHz), and DECIGO in
116-541: A student production of Shakespeare's A Midsummer Night's Dream , chosen because actor and honorary alumnus Sam Neill had appeared in a production directed by Ngaio Marsh in 1969. The new theatre is available for short-term or long-term hire. Full AV and technical facilities and orchestra pit are available. A retractable seating structure allows for capacity of 330 seated and 1000 standing. 43°31′27″S 172°34′50″E / 43.5242°S 172.5806°E / -43.5242; 172.5806 This article about
145-499: Is an SI derived unit whose formal expression in terms of SI base units is s , meaning that one hertz is one per second or the reciprocal of one second . It is used only in the case of periodic events. It is named after Heinrich Rudolf Hertz (1857–1894), the first person to provide conclusive proof of the existence of electromagnetic waves . For high frequencies, the unit is commonly expressed in multiples : kilohertz (kHz), megahertz (MHz), gigahertz (GHz), terahertz (THz). Some of
174-587: Is situated on the corner of Montana & Ilam Roads. Students can receive academic advice and support through the Education Team, and social comment and entertainment by way of UCSA's media: Canta magazine. The association also runs other events like Orientation Week, Winterlude and the End of Lectures Tea Party. One of the many roles of the UCSA is to coordinate with Canterbury University clubs such as
203-477: Is the photon's energy, ν is its frequency, and h is the Planck constant . The hertz is defined as one per second for periodic events. The International Committee for Weights and Measures defined the second as "the duration of 9 192 631 770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium -133 atom" and then adds: "It follows that
232-452: Is usually measured in kilohertz (kHz), megahertz (MHz), or gigahertz (GHz). with the latter known as microwaves . Light is electromagnetic radiation that is even higher in frequency, and has frequencies in the range of tens of terahertz (THz, infrared ) to a few petahertz (PHz, ultraviolet ), with the visible spectrum being 400–790 THz. Electromagnetic radiation with frequencies in the low terahertz range (intermediate between those of
261-502: The Student Volunteer Army , UC Bike and ENSOC . The organization provides services such as advertising, facilities and grants to clubs. RDU 98.5FM is a student radio station operating from the University of Canterbury in New Zealand. It broadcasts on a frequency of 98.5 MHz and (since late 2006) through online streaming, but began on 23 February 1976 on 1413 kHz , which is now occupied by Radio Ferrymead . In
290-449: The 0.1–10 Hz range. In computers, most central processing units (CPU) are labeled in terms of their clock rate expressed in megahertz ( MHz ) or gigahertz ( GHz ). This specification refers to the frequency of the CPU's master clock signal . This signal is nominally a square wave , which is an electrical voltage that switches between low and high logic levels at regular intervals. As
319-468: The 1970s. In some usage, the "per second" was omitted, so that "megacycles" (Mc) was used as an abbreviation of "megacycles per second" (that is, megahertz (MHz)). Sound is a traveling longitudinal wave , which is an oscillation of pressure . Humans perceive the frequency of a sound as its pitch . Each musical note corresponds to a particular frequency. An infant's ear is able to perceive frequencies ranging from 20 Hz to 20 000 Hz ;
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#1732780919443348-582: The Little Theatre, which had been destroyed by fire in 1948. The theatre was extensively damaged during the 2011 Christchurch earthquakes , and was subsequently demolished in October 2016. The rebuilt theatre, within Haere-roa, the University of Canterbury Students’ Association building at 90 Ilam Road in Christchurch , New Zealand , was officially opened on 2 August 2019. The opening involved
377-554: The association has grown into a diverse organisation with an annual turnover of around $ 7.0 million, approximately half of which is catering-related and approximately 15% of which is derived from student membership levies. The UCSA office was previously situated in the Puaka-James Hight Building following the 2011 Christchurch earthquake , after which the UCSA Building was deemed unsafe. The Undercroft
406-476: The average adult human can hear sounds between 20 Hz and 16 000 Hz . The range of ultrasound , infrasound and other physical vibrations such as molecular and atomic vibrations extends from a few femtohertz into the terahertz range and beyond. Electromagnetic radiation is often described by its frequency—the number of oscillations of the perpendicular electric and magnetic fields per second—expressed in hertz. Radio frequency radiation
435-551: The early 1980s it was known as "Radio U". in 1986 the station converted to FM and changed its name to Radio UFM. Long running shows include Girl School, The Mixtape Sessions, The Joint, Guitar Media, Dollar Mix, Hauswerk and Vintage Cuts. Wammo and Spanky became an infamous duo on the RDU Mornings show, most notably coaxing Don Brash into answering inappropriate love letters live on-air, and upsetting listeners by playing distasteful games poking fun at cancer victims. Wammo
464-440: The event being counted may be a complete cycle); 100 Hz means "one hundred periodic events occur per second", and so on. The unit may be applied to any periodic event—for example, a clock might be said to tick at 1 Hz , or a human heart might be said to beat at 1.2 Hz . The occurrence rate of aperiodic or stochastic events is expressed in reciprocal second or inverse second (1/s or s ) in general or, in
493-449: The hertz has become the primary unit of measurement accepted by the general populace to determine the performance of a CPU, many experts have criticized this approach, which they claim is an easily manipulable benchmark . Some processors use multiple clock cycles to perform a single operation, while others can perform multiple operations in a single cycle. For personal computers, CPU clock speeds have ranged from approximately 1 MHz in
522-413: The highest normally usable radio frequencies and long-wave infrared light) is often called terahertz radiation . Even higher frequencies exist, such as that of X-rays and gamma rays , which can be measured in exahertz (EHz). For historical reasons, the frequencies of light and higher frequency electromagnetic radiation are more commonly specified in terms of their wavelengths or photon energies : for
551-616: The hyperfine splitting in the ground state of the caesium 133 atom is exactly 9 192 631 770 hertz , ν hfs Cs = 9 192 631 770 Hz ." The dimension of the unit hertz is 1/time (T ). Expressed in base SI units, the unit is the reciprocal second (1/s). In English, "hertz" is also used as the plural form. As an SI unit, Hz can be prefixed ; commonly used multiples are kHz (kilohertz, 10 Hz ), MHz (megahertz, 10 Hz ), GHz (gigahertz, 10 Hz ) and THz (terahertz, 10 Hz ). One hertz (i.e. one per second) simply means "one periodic event occurs per second" (where
580-530: The late 1970s ( Atari , Commodore , Apple computers ) to up to 6 GHz in IBM Power microprocessors . Various computer buses , such as the front-side bus connecting the CPU and northbridge , also operate at various frequencies in the megahertz range. Higher frequencies than the International System of Units provides prefixes for are believed to occur naturally in the frequencies of
609-570: The organisation. After the 2011 Christchurch earthquake , the radio station lost its base at the University of Canterbury and for the next three years, it broadcast from a modified horse truck. Luc MacKay is the UCSA President for 2024 and has been re-elected for 2025. Past UCSA Presidents include: MHz The hertz (symbol: Hz ) is the unit of frequency in the International System of Units (SI), often described as being equivalent to one event (or cycle ) per second . The hertz
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#1732780919443638-564: The rules for capitalisation of a common noun ; i.e., hertz becomes capitalised at the beginning of a sentence and in titles but is otherwise in lower case. The hertz is named after the German physicist Heinrich Hertz (1857–1894), who made important scientific contributions to the study of electromagnetism . The name was established by the International Electrotechnical Commission (IEC) in 1935. It
667-524: The sale selectively leaked information to The Press stating the station was sold for the price of $ 1. Actually the stations assets including broadcast equipment and transmitters were sold at market (book) value, a market level rental agreed for the space occupied and an annual licence fee agreed. Various arrangements were debated over the preceding three years following the previous limited liability company (controlled by minority shareholders) trading insolvently which forced UCSA to inject funds and restructure
696-413: The specific case of radioactivity , in becquerels . Whereas 1 Hz (one per second) specifically refers to one cycle (or periodic event) per second, 1 Bq (also one per second) specifically refers to one radionuclide event per second on average. Even though frequency, angular velocity , angular frequency and radioactivity all have the dimension T , of these only frequency is expressed using
725-480: The unit hertz. Thus a disc rotating at 60 revolutions per minute (rpm) is said to have an angular velocity of 2 π rad/s and a frequency of rotation of 1 Hz . The correspondence between a frequency f with the unit hertz and an angular velocity ω with the unit radians per second is The hertz is named after Heinrich Hertz . As with every SI unit named for a person, its symbol starts with an upper case letter (Hz), but when written in full, it follows
754-403: The unit's most common uses are in the description of periodic waveforms and musical tones , particularly those used in radio - and audio-related applications. It is also used to describe the clock speeds at which computers and other electronics are driven. The units are sometimes also used as a representation of the energy of a photon , via the Planck relation E = hν , where E
783-490: Was adopted by the General Conference on Weights and Measures (CGPM) ( Conférence générale des poids et mesures ) in 1960, replacing the previous name for the unit, "cycles per second" (cps), along with its related multiples, primarily "kilocycles per second" (kc/s) and "megacycles per second" (Mc/s), and occasionally "kilomegacycles per second" (kMc/s). The term "cycles per second" was largely replaced by "hertz" by
812-684: Was redeveloped as a student space. A new USCA building opened in July 2019. The association provides services ranging from an Early Learning Centre to a Chaplaincy team through to student bars and cafes; from Student Job Search to places to spend free time by way of the 150+ clubs and societies. The UCSA operates a number of other facilities spread around the campus including The Foundry and Bentleys Bar, cafes in Rātā | Engineering core (Nuts 'n' Bolts) and Puaka James Hight Library (Otto, Oishii, Food court, Cafe 1894, Chilton's) buildings. A second Early Learning Centre
841-469: Was scouted by Kiwi FM and was replaced by Kate Gorgeous, who hosted the show for a year until the end of 2007. After a long search for a new host, Spanky has returned to host the show solo under the new show title Breakfast with Spanky. In 2007, the University of Canterbury Students' Association controversially agreed to sub-licence the RDU frequency to a newly formed company, RDU98.5FM Ltd and students against
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