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See searches and references containing NEGATIVE TEMPERATURE!NEGATIVE TEMPERATURE
Physical systems hotter than any other
thermodynamic systems can achieve negative thermodynamic temperature; that is, their temperature can be expressed as a negative quantity on the Kelvin or Rankine
Negative_temperature
Physical quantity of hot and cold
body at that temperature. However, negative absolute temperatures exist, and are actually hotter than any positive temperature. Temperature is important
Temperature
Differential equation parameter in thermal physics
as reactivity. The temperature coefficient of most of the reactions lies between 2 and 3. Most ceramics exhibit negative temperature dependence of resistance
Temperature_coefficient
Type of resistor whose resistance varies with temperature
conduction models. Negative-temperature-coefficient (NTC) thermistors have less resistance at higher temperatures, while positive-temperature-coefficient (PTC)
Thermistor
Differentiating positive and negative zero
−1/Temperature. In this context, a temperature of −0 is a (theoretical) temperature larger than any other negative temperature, corresponding to the maximum
Signed_zero
Lowest theoretical temperature
temperature, beyond which the gas would have negative pressure or volume—an unphysical result. To resolve this, the concept of absolute temperature is
Absolute_zero
SI unit of temperature
of temperature scales International Temperature Scale of 1990 kT (energy) – product of the Boltzmann constant and temperature Negative temperature Outline
Kelvin
resistance when subjected to a corresponding change in body temperature. Negative Temperature Coefficient (NTC) thermistors exhibit a decrease in electrical
List_of_temperature_sensors
Control concept
response to temperature changes were used in negative feedback systems to control vents in furnaces, maintaining a steady internal temperature. In the invisible
Negative_feedback
Voltage reference used in integrated circuits
positive temperature coefficient (i.e., it increases with temperature). The base–emitter voltage for each transistor has a negative temperature coefficient
Brokaw_bandgap_reference
Concept in physical models
and negative matter particles will have the positive matter portion increase in temperature without bound.[citation needed] However, the negative matter
Negative_mass
Key reliability issue in MOSFETs
Negative-bias temperature instability (NBTI) is a key reliability issue in MOSFETs, a type of transistor aging. NBTI manifests as an increase in the threshold
Negative-bias temperature instability
Negative-bias_temperature_instability
Measure of the coldness of a system
content to temperature, β is generally considered a more fundamental quantity than temperature owing to the phenomenon of negative temperature, in which
Thermodynamic_beta
Physical property of matter
tens of atoms close to a phase transition. A negative heat capacity can result in a negative temperature. According to the virial theorem, for a self-gravitating
Heat_capacity
predicted by Onsager to exhibit states of negative temperature. The possibility of negative absolute temperature originates with Onsager's analysis of the
Two-dimensional quantum turbulence
Two-dimensional_quantum_turbulence
Number
example, for an absolute temperature (typically measured in kelvins), zero is the lowest possible value. (Negative temperatures can be defined for some
0
Type of nuclear reactor
the reactivity feedback of the temperature change caused by increased or decreased steam flow. (See: Negative temperature coefficient.) Boron and cadmium
Pressurized_water_reactor
Property of light sources related to black-body radiation
Color temperature is a parameter describing the color of a visible light source by comparing it to the color of light emitted by an idealized opaque,
Color_temperature
Maximal instantaneous input current drawn by an electrical device when first turned on
(Non-graphitized) carbon-filament lamps, rarely used now, have a negative temperature coefficient and draw more current as they warm up; an "inrush" current
Inrush_current
Topics referred to by the same term
zero". As such, it is usually used for negative numbers; the most common usage refers to negative temperature. Sub-zero can also refer to: Sub-Zero (Mortal
Subzero
Class of nuclear reactor used for education and research
fuel, which has a large, prompt negative fuel temperature coefficient of reactivity, meaning that as the temperature of the core increases, the reactivity
TRIGA
Proposed fuel-recycling commercial reactor
conversion system. According to Oklo, the reactor would have had a "large negative temperature reactivity coefficient", lack pumps and valves, use heat pipes for
Aurora_nuclear_reactor
State of low temperature
low temperatures Cryosphere – Earth's surface where water is frozen Freezing point – Temperature at which a solid turns liquid Negative temperature – Physical
Cold
Chemical compound
short-chain length, methyl butyrate does not reproduce well the negative temperature coefficient (NTC) behaviour and early CO2 formation characteristics
Methyl_butyrate
Alloy of copper and nickel
[2%] ). In 1887, Edward Weston discovered that metals can have a negative temperature coefficient of resistance, inventing what he called his "Alloy No
Constantan
Lowest energy level of a quantum system
the highest excited state to have absolute zero temperature for systems that exhibit negative temperature. In one dimension, the ground state of the Schrödinger
Ground_state
Concept in statistical mechanics
current in each stroke. The excitation temperature can even be a negative temperature for a system with inverted levels (such as a maser). The 21 cm line
Excitation_temperature
Quantum state of a system
temperature of a group of particles is indicative of the level of excitation (with the notable exception of systems that exhibit negative temperature)
Excited_state
Component used to limit inrush current
components and avoid blowing fuses or tripping circuit breakers. Negative temperature coefficient (NTC) thermistors and fixed resistors are often used
Inrush_current_limiter
American theoretical nuclear physicist (1925–2004)
prompt negative temperature coefficient was groundbreaking because it provided a markedly safer reactor even in the event of misuse. With the negative temperature
Ted_Taylor_(physicist)
Real number that is strictly less than zero
and negative. Negative numbers are used to describe values on a scale that goes below zero, such as the Celsius and Fahrenheit scales for temperature. The
Negative_number
Phenomenon of non-ideal fluids changing temperature
is negative at both very high and very low temperatures; at very high pressure it is negative at all temperatures. The maximum inversion temperature (621
Joule–Thomson_effect
Fluid used to maximize thermal contact
cause a runaway to catastrophic failure of the device due to the negative temperature coefficient property of semiconductors. Factory PCs and laptops—although
Thermal_paste
Chemical data page
equilibrium temperature of vapor over solid. Otherwise temperature is equilibrium of vapor over liquid. Note that these are all negative temperature values
Methane_(data_page)
Type of diode
have a small positive temperature coefficient of voltage, whereas diodes relying on the Zener effect have a negative temperature coefficient.[dubious –
Avalanche_diode
Electric light bulb with a resistively heated wire filament
were made from carbonized paper or bamboo. Carbon filaments have a negative temperature coefficient of resistance—as they get hotter, their electrical resistance
Incandescent_light_bulb
Type of nuclear reactor cooled by molten material
generators.[citation needed] MSRs exploit a negative temperature coefficient of reactivity and a large allowable temperature rise to prevent criticality accidents
Molten-salt_reactor
Mixture of liquids whose proportions do not change when distilled
point temperatures of any of its constituents (a positive azeotrope), or greater than the boiling point of any of its constituents (a negative azeotrope)
Azeotrope
Image on photographic film
In photography, a negative is an image, usually on a strip or sheet of transparent plastic film, in which the lightest areas of the photographed subject
Negative_(photography)
of Infrared radiation), temperature up and down until the pattern is "just resolvable." The positive and negative temperature differences are stored into
Minimum resolvable temperature difference
Minimum_resolvable_temperature_difference
Type of resistive heater
materials have somewhat negative temperature coefficients at low temperatures and at high temperatures, however there is a temperature range in between where
Self-regulating_heater
Problem in nuclear reactor start-up
average power of the reactor stays more or less unchanged. Strong negative temperature coefficient of reactivity causes damping of these oscillations, and
Iodine_pit
Rate of change of speed of sound with distance
there is a negative temperature gradient in atmosphere. The speed of sound decreases with decreasing temperature, so this also creates a negative sound speed
Sound_speed_gradient
Freezer used for storing contents at unusually low temperatures
commonly referred to as a "minus 80 freezer" or a "negative 80 freezer", referring to the most common temperature standard. ULT freezers come in upright and chest
Ultra-low_temperature_freezer
Kinetic energy of an unbound neutron
detection temperature, also called the neutron energy, indicates a free neutron's kinetic energy, usually given in electron volts. The term temperature is used
Neutron_temperature
Decrease in value at a rate proportional to the current value
Thermoelectricity: The decline in resistance of a Negative Temperature Coefficient Thermistor as temperature is increased. Vibrations: Some vibrations may
Exponential_decay
Oxide of silicon
similar to those observed in liquid water: negative temperature expansion, density maximum at temperatures ~5000 °C, and a heat capacity minimum. Its
Silicon_dioxide
Tendency of matter to change volume in response to a change in temperature
(39.169 °F) and then becomes negative below this temperature; this means that water has a maximum density at this temperature, and this leads to bodies of
Thermal_expansion
Chemical synthesis process
in depth, and the resistance drops as the carbon heats due to a negative temperature coefficient, causing the current to increase. Cool down takes weeks
Acheson_process
Two-terminal electronic component
a negative temperature coefficient, typically −2 mV/°C for silicon diodes. The temperature coefficient is approximately constant for temperatures above
Diode
Quantized flux circulation of some physical quantity
to exhibit negative temperatures. Onsager provided the first prediction that some isolated systems can exhibit negative Boltzmann temperature. Onsager's
Quantum_vortex
Probability distribution of energy states of a system
Boltzmann Fair Division Bose–Einstein statistics Fermi–Dirac statistics Negative temperature Softmax function Landau, Lev Davidovich & Lifshitz, Evgeny Mikhailovich
Boltzmann_distribution
Naval nuclear reactor
steady-state operation comes as a result of the coolant water's negative temperature coefficient. The power of the reactor is determined by the instantaneous
A2W_reactor
Partial differential equation describing the evolution of temperature in a region
heat energy per unit area through a surface is proportional to the negative temperature gradient across it: q = − k ∇ u {\displaystyle \mathbf {q} =-k\,\nabla
Heat_equation
Volcanic supereruption 74,000 years ago in Indonesia
decrease in precipitation occurs in the high emission scenario. Negative temperature anomalies return to less than 1 °C (1.8 °F) within 3 and 6 years
Youngest_Toba_eruption
Physical phenomenon
McNamara put forward a 2d guiding center plasma model. The concepts of negative temperature state, and of the convective cells contributed much to the understanding
Bohm_diffusion
Smallest amount of fissile material needed to sustain a nuclear reaction
different topic). Thermal expansion associated with temperature increase also contributes a negative coefficient of reactivity since fuel atoms are moving
Critical_mass
Process in physical chemistry
show NTE over certain temperature ranges. Fairly pure silicon (Si) has a negative coefficient of thermal expansion for temperatures between about 18 K and
Negative_thermal_expansion
Type of metal fluoride glass
a relatively low glass transition temperature (Tg) of 260–300 °C, low dispersion and a low and negative temperature dependence of refractive index dn/dT
ZBLAN
Difference of a temperature from a reference value
Temperature anomaly is the difference, positive or negative, of a temperature from a base or reference value, normally chosen as an average of temperatures
Temperature_anomaly
Measure of voltage induced by change of temperature
generally positive values for p doped materials and negative values for n doping. A material's temperature, crystal structure, and impurities influence the
Seebeck_coefficient
Copper-based alloy
with temperature, introducing errors in precision measurements. In 1887, Weston discovered that certain alloys could possess a negative temperature coefficient
Manganin
Type of refractory ceramics
Ultra-high-temperature ceramics (UHTCs) are a type of refractory ceramics that can withstand extremely high temperatures without degrading, often above
Ultra-high temperature ceramic
Ultra-high_temperature_ceramic
Comparison of the properties of the three main categories in the periodic table
europium has a negative temperature coefficient of resistance' i.e. that conductivity increases with rising temperature At or near room temperature Chedd defines
Properties of metals, metalloids and nonmetals
Properties_of_metals,_metalloids_and_nonmetals
Diode that allows current to flow in the reverse direction at a specific voltage
shows a marked negative temperature coefficient. Above 5.6 volts, the avalanche effect dominates and exhibits a positive temperature coefficient. In
Zener_diode
Lowest possible energy of a quantum system or field
the highest excited state to have absolute zero temperature for systems that exhibit negative temperature. The wave function of the ground state of a particle
Zero-point_energy
Safety feature in electrical engineering
power dissipation drawback), or negative temperature coefficient thermistors are simple options, while a positive temperature coefficient thermistor is used
Current_limiting
Minimum energy required for a chemical reaction
decreases with temperature more rapidly than k2 increases, so that k actually decreases with temperature corresponding to a negative observed activation
Activation_energy
NASA project aimed at producing a nuclear reactor for space
geometry that creates a negative temperature reactivity coefficient. In effect this means that as the power demand increases the temperature of the reactor drops
Kilopower
Park in Moscow
part of the pavilion, a negative temperature is maintained. About 70 tons of water is required to form the cave. The temperature in the cave does not rise
Zaryadye_Park
Electronic device producing a fixed voltage
a negative temperature coefficient (i.e. it decreases with increasing temperature), and the junction voltage difference has a positive temperature coefficient
Voltage_reference
Type of dieting food
consume it in smoothie form while it's still at freezing temperature. Diets based on negative-calorie food do not work as advertised but can lead to weight
Negative-calorie_food
Device for measuring body temperature
sub-lingual temperature), under the armpit (axillary temperature), into the rectum via the anus (rectal temperature), into the ear (tympanic temperature), or
Medical_thermometer
Homogeneous mixture of a solute and a solvent
different phase. The properties of the mixture (such as concentration, temperature, and density) can be uniformly distributed through the volume but only
Solution_(chemistry)
Ability of an organism to keep its body temperature within certain boundaries
ability of an organism to keep its body temperature within certain boundaries, even when the surrounding temperature is very different. A thermoconforming
Thermoregulation
Natural disaster in Europe
reconstruction of temperatures in Europe for the year 1473. Brown‑red shading indicates positive, and blue shading negative temperature anomalies relative
1473 heat and drought in Europe
1473_heat_and_drought_in_Europe
input impedance. Produces a very low distortion sine wave. Uses negative temperature compensation in the form of a light bulb or diode. Operational amplifiers
Operational amplifier applications
Operational_amplifier_applications
Concept in thermodynamics
T<T_{\text{inv}}} , expansion causes temperature to decrease because the work of attractive intermolecular forces dominates, giving a negative change in average molecular
Inversion_temperature
Type of rechargeable battery
that the battery exhibits a very marked negative temperature coefficient. This means that as the cell temperature rises, the internal resistance falls.
Nickel–cadmium_battery
Device that converts electricity into heat
subcategories – negative-temperature-coefficient (NTC) and positive-temperature-coefficient (PTC) materials – based on the effect of temperature changes on
Heating_element
Opposition to the passage of an electric current
typically +3×10−3 K−1 to +6×10−3 K−1 for metals near room temperature. It is usually negative for semiconductors and insulators, with highly variable magnitude
Electrical resistance and conductance
Electrical_resistance_and_conductance
average annual temperature of all weather stations in Japan so far. The only area with a negative value, Mount Fuji's extreme maximum temperature was only 17
List of extreme temperatures in Japan
List_of_extreme_temperatures_in_Japan
Mathematical symbols (+ and −)
generally referred to as "negative five" though speakers born before 1950 often refer to it as "minus five". (Temperatures tend to follow the older usage;
Plus_and_minus_signs
Topics referred to by the same term
Tennis Centre (United Kingdom) National Textile Corporation, India Negative temperature coefficient, of e.g. a thermistor Nourseothricin, an antibiotic Nuclear
NTC
Phenomenon inducing change in convection current within fluid
that the time derivative of the heat current is proportional to the negative temperature difference across the device, in analogy to an electric inductor
Thermal_inductance
American supplier of equipment and systems for the energy industry
in operation and after shutdown and a negative temperature coefficient so that it shuts down at high temperatures. The heat sink can be to atmosphere,
Holtec_International
Measure of temperature sensitivity in muscles
Values less than 1.0 indicate a negative or inverse thermal dependence, i.e., a decrease in muscle performance as temperature increases. Q10 values for biological
Q10_(temperature_coefficient)
U.S. project 1946–1961
power demand did, which affected the outlet and inlet temperatures because of the negative temperature coefficient of reactivity. The ARE was operated at
Aircraft_Nuclear_Propulsion
Microscopic device for detecting infrared radiation
This is related to the material's temperature coefficient of resistance (TCR) specifically its negative temperature coefficient. Industry currently manufactures
Microbolometer
Feedback related to climate change
much global temperatures will increase for a given amount of greenhouse gas emissions. Positive feedbacks amplify global warming while negative feedbacks
Climate_change_feedbacks
theory, it usually is not. The ambiguity can be solved with the terms "non-negative integers", which includes 0, and "positive integers", which does not. Natural
List_of_numbers
Japanese pharmacologist (1927–2013)
basis for insecticidal actions Nerve sensitivity as a basis for the negative temperature dependence of insecticidal action of DDT Nerve sensitivity as a major
Toshio_Narahashi
Indian nuclear reactor design
that help reduce the probability of this occurrence through its negative temperature and void coefficients, low core power density, low excess reactivity
Advanced_heavy-water_reactor
Type of rechargeable battery
(NiCd), with both using nickel oxide hydroxide, NiO(OH). However, the negative electrodes use a hydrogen-absorbing alloy instead of cadmium. NiMH batteries
Nickel–metal_hydride_battery
Taiwanese electronics manufacturer
Portfolio includes NTC (negative temperature coefficient) and PTC (positive temperature coefficient) thermistors, temperature sensor probes, varistors
Thinking_Electronic
an upward curve, while plots with low balance point temperatures curve downward due to a negative a variable. The plot in which a is closest to zero represents
Balance_point_temperature
Species of flowering plant in the family Elaeagnaceae
this period, negative temperatures of −50 °C may be tolerated. Whereas in the post-dormant period in January to March, the critical temperature drops in air
Sea_buckthorn
Tendency to give more importance to negative experiences than positive ones
or negatively a change in temperature is interpreted. With respect to positive and negative gradients, it seems that negative events are thought to be
Negativity_bias
Nuclear power safety method that does not require electrical power nor intervention
fluoride fuel dissolved in it. The MSRE had a negative temperature coefficient of reactivity: as the FLiBe temperature increased, it expanded, along with the
Passive_nuclear_safety
Electrical capacitor with an insulating plastic film as the dielectric
Polypropylene film capacitors have a linear, negative temperature coefficient of capacitance of ±2,5 % within their temperature range. Therefore, polypropylene film
Film_capacitor
NEGATIVE TEMPERATURE
NEGATIVE TEMPERATURE
Girl/Female
Indian, Sikh
Demolishing Negative Energy
Female
Native American
Native American Hopi name WUTI means "woman."
Male
Native American
Native American Algonquin name CHOGAN means "blackbird."
Female
Native American
Native American Hopi name WAKI means "shelter."
Male
Native American
Native American Navajo name ASHKII means "boy."
Male
Native American
Native American Algonquin name ABOOKSIGUN means "wildcat."
Female
Native American
Native American Sioux name WEEKO means "pretty."
Male
Native American
Native American Algonquin name ASKOOK means "snake."
Male
Native American
Native American Algonquin name CHANSOMPS means "locust."
Female
Native American
Native American Hopi name ZIHNA means "spins."
Female
Native American
Native American Sioux name WITASHNAH means "virginal."
Male
Native American
Native American Hopi name CHOOVIO means "antelope."
Male
Native American
Native American Algonquin name ACHAK means "spirit."
Female
Native American
Native American Hopi name YAMKA means "blossom."
Female
Native American
Native American name APONI means "butterfly."
Female
Native American
Native American Algonquin name WIKIMAK means "wife."
Female
Native American
Native American Dakota name ZITKALA means "bird."
Male
Native American
Native American Algonquin name ABUKCHEECH means "mouse."
Male
Native American
Native American Sioux name CHAYTON means "falcon."
Female
Native American
Native American Hopi name YOKI means "rain."
NEGATIVE TEMPERATURE
NEGATIVE TEMPERATURE
Boy/Male
Hindu, Indian
Parrot
Boy/Male
Gujarati, Hindu, Indian, Kannada, Marathi, Sanskrit, Telugu
Earth; Land
Surname or Lastname
English
English : habitational name from North or South Elkington in Lincolnshire, so named from an Old English personal name (possibly Ä’a(n)lÄc) + Old English tÅ«n ‘enclosure’, ‘settlement’. Elkington in Northamptonshire is not the source of the family name: it did not acquire the name until 1617, before which it was Eltington or Elteton.
Girl/Female
Hindu, Indian, Marathi, Sanskrit, Traditional
Well Known; Learned; Apsara
Male
French
French form of Latin Lupus, LOUP means "wolf."
Girl/Female
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Sanskrit, Telugu
Gods Gift; A Moment in Time
Boy/Male
American, Anglo, British, Czechoslovakian, Danish, Dutch, English, French, German, Indian, Swiss
Wealthy Guardian; Wealthy Defender; Prosperous Guardian; Guardian of Prosperity
Girl/Female
Tamil
Saijayani | ஸைஜயாநீ
Personification of victory, A name of shirdi Sai baba
Girl/Female
Hindu, Indian, Traditional
Flower Bud
Surname or Lastname
English
English : perhaps a variant of Hadaway, itself a variant of Hathaway. In the U.S., this is name is concentrated in the south, in TX, TN, and GA.
NEGATIVE TEMPERATURE
NEGATIVE TEMPERATURE
NEGATIVE TEMPERATURE
NEGATIVE TEMPERATURE
NEGATIVE TEMPERATURE
v. t.
To reject by vote; to refuse to enact or sanction; as, the Senate negatived the bill.
a.
Of or pertaining to a legate; as, legatine power.
a.
Made by, proceeding from, or under the sanction of, a legate; as, a legatine constitution.
a.
Asserting absence of connection between a subject and a predicate; as, a negative proposition.
imp. & p. p.
of Negative
a.
Indicating or expressing relation; refering to an antecedent; as, a relative pronoun.
adv.
In a negative manner; with or by denial.
n.
That side of a question which denies or refuses, or which is taken by an opposing or denying party; the relation or position of denial or opposition; as, the question was decided in the negative.
a.
Expressing denial; belonging to negation; negative.
n.
The negative plate of a voltaic or electrolytic cell.
n.
A proposition by which something is denied or forbidden; a conception or term formed by prefixing the negative particle to one which is positive; an opposite or contradictory term or conception.
a.
Found in nature; not artificial; as native sodium chloride.
a.
Having relation or reference; referring; respecting; standing in connection; pertaining; as, arguments not relative to the subject.
a.
Metalloidal; nonmetallic; -- contracted with positive or basic; as, the nitro group is negative.
a.
Denying; renouncing; negative.
a.
Denying; implying, containing, or asserting denial, negation or refusal; returning the answer no to an inquiry or request; refusing assent; as, a negative answer; a negative opinion; -- opposed to affirmative.
a.
Found in nature uncombined with other elements; as, native silver.
a.
Not positive; without affirmative statement or demonstration; indirect; consisting in the absence of something; privative; as, a negative argument; a negative morality; negative criticism.
a.
Having the nature of a plant; vegetable; as, vegetive life.
a.
Negative; nonmetallic; acid; -- opposed to positive, metallic, or basic.