Most linked-to pages

Showing below up to 500 results in range #501 to #1,000.

View (previous 500 | next 500) (20 | 50 | 100 | 250 | 500)

  1. Simple machine‏‎ (11 links)
  2. Ammonia‏‎ (11 links)
  3. Home temperature control‏‎ (11 links)
  4. Atm‏‎ (11 links)
  5. Thermal power‏‎ (11 links)
  6. Otto cycle‏‎ (11 links)
  7. Ore‏‎ (11 links)
  8. Supercontinent‏‎ (11 links)
  9. Natural gas vehicle‏‎ (11 links)
  10. Incandescent light bulb‏‎ (11 links)
  11. Biosphere‏‎ (11 links)
  12. Particle‏‎ (11 links)
  13. Shale oil‏‎ (11 links)
  14. Reserve vs occurrence‏‎ (11 links)
  15. Graphite‏‎ (11 links)
  16. Benzene‏‎ (10 links)
  17. Energy currencies‏‎ (10 links)
  18. Variable cost‏‎ (10 links)
  19. Centimeter‏‎ (10 links)
  20. Skylight‏‎ (10 links)
  21. Indicators of a warming world‏‎ (10 links)
  22. Solar collector‏‎ (10 links)
  23. Hydrogen as an energy currency‏‎ (10 links)
  24. Meters per second‏‎ (10 links)
  25. Life cycle‏‎ (10 links)
  26. Rock‏‎ (10 links)
  27. Calorie‏‎ (10 links)
  28. Water storage‏‎ (10 links)
  29. Molecular hydrogen‏‎ (10 links)
  30. Horsepower‏‎ (10 links)
  31. Ultraviolet radiation‏‎ (10 links)
  32. Geologic era‏‎ (10 links)
  33. Acceleration due to gravity‏‎ (10 links)
  34. Ice age‏‎ (10 links)
  35. Mass-energy equivalence‏‎ (10 links)
  36. Flywheel‏‎ (10 links)
  37. IPCC‏‎ (10 links)
  38. Exhaust gas‏‎ (10 links)
  39. Charcoal‏‎ (10 links)
  40. Coal ash‏‎ (10 links)
  41. Climate vs weather‏‎ (10 links)
  42. BTU‏‎ (10 links)
  43. RBMK‏‎ (10 links)
  44. Natural carbon cycle‏‎ (10 links)
  45. Mechanical power‏‎ (10 links)
  46. RPM‏‎ (10 links)
  47. Non-conservative force‏‎ (10 links)
  48. BRIC‏‎ (10 links)
  49. Power density‏‎ (10 links)
  50. Pareto efficiency‏‎ (10 links)
  51. Total primary energy supply‏‎ (10 links)
  52. Megawatts thermal‏‎ (10 links)
  53. Market force‏‎ (10 links)
  54. Negative externality‏‎ (10 links)
  55. GDP‏‎ (10 links)
  56. Thermal conduction‏‎ (10 links)
  57. Costs for a firm‏‎ (10 links)
  58. Resistor‏‎ (10 links)
  59. Economies of scale‏‎ (10 links)
  60. Internal energy‏‎ (9 links)
  61. Gallon‏‎ (9 links)
  62. Fresh water‏‎ (9 links)
  63. Transmutation‏‎ (9 links)
  64. Diode operation‏‎ (9 links)
  65. Soot‏‎ (9 links)
  66. Energy use by sector‏‎ (9 links)
  67. Electric charge‏‎ (9 links)
  68. Waste‏‎ (9 links)
  69. Earth's heat balance‏‎ (9 links)
  70. Regulation‏‎ (9 links)
  71. Hot line‏‎ (9 links)
  72. Inversion layer‏‎ (9 links)
  73. Magnetic flux‏‎ (9 links)
  74. Electric power‏‎ (9 links)
  75. Water cycle‏‎ (9 links)
  76. Paleozoic‏‎ (9 links)
  77. Detailed pollution data‏‎ (9 links)
  78. Primary pollutant‏‎ (9 links)
  79. Emissions trading‏‎ (9 links)
  80. Moderation‏‎ (9 links)
  81. Ground source heat pump‏‎ (9 links)
  82. Commercial energy use‏‎ (9 links)
  83. Primary flow‏‎ (9 links)
  84. Dam failures‏‎ (9 links)
  85. Temperature of the Earth without the greenhouse effect‏‎ (9 links)
  86. Lubricating oil‏‎ (9 links)
  87. X-ray‏‎ (9 links)
  88. Positive externality‏‎ (9 links)
  89. Dry scrubber‏‎ (9 links)
  90. Outlet‏‎ (9 links)
  91. External combustion engine‏‎ (9 links)
  92. McKelvey box‏‎ (9 links)
  93. Horizontal well‏‎ (9 links)
  94. External heat engine‏‎ (9 links)
  95. Mechanical advantage‏‎ (9 links)
  96. Gravitational force‏‎ (9 links)
  97. Nuclear species‏‎ (9 links)
  98. Supercritical fluid‏‎ (9 links)
  99. Ohm's law‏‎ (9 links)
  100. Precambrian‏‎ (9 links)
  101. Subsidy‏‎ (9 links)
  102. Pulley‏‎ (9 links)
  103. Climate system‏‎ (9 links)
  104. Fire‏‎ (9 links)
  105. Fertility rate‏‎ (9 links)
  106. Elastic potential energy‏‎ (9 links)
  107. Domestic water heating‏‎ (9 links)
  108. Wet scrubber‏‎ (9 links)
  109. TPES‏‎ (9 links)
  110. Bituminous‏‎ (9 links)
  111. Fibrous insulation‏‎ (9 links)
  112. Insulator‏‎ (9 links)
  113. Cryosphere‏‎ (9 links)
  114. Concentration in parts per‏‎ (9 links)
  115. Octane‏‎ (9 links)
  116. Waterwheel‏‎ (9 links)
  117. Social cost‏‎ (9 links)
  118. Coal types‏‎ (9 links)
  119. Combined cycle gas plant‏‎ (9 links)
  120. Ground fault circuit interrupter‏‎ (9 links)
  121. Fertile‏‎ (9 links)
  122. Per capita‏‎ (9 links)
  123. Inflation‏‎ (9 links)
  124. Ionization‏‎ (9 links)
  125. Layers of the atmosphere‏‎ (9 links)
  126. Inverse square law‏‎ (9 links)
  127. In situ oil sands mining‏‎ (9 links)
  128. Greenhouse effect on other planets‏‎ (9 links)
  129. Hydroelectric discharge‏‎ (9 links)
  130. CO2 footprint‏‎ (9 links)
  131. Thermal insulation‏‎ (9 links)
  132. Solar chimney‏‎ (9 links)
  133. Hypoxia‏‎ (9 links)
  134. Miles per gallon‏‎ (9 links)
  135. Geologic age‏‎ (9 links)
  136. Betz limit‏‎ (9 links)
  137. Plasma‏‎ (8 links)
  138. Valence and core electrons‏‎ (8 links)
  139. Weather stripping‏‎ (8 links)
  140. Stefan-Boltzmann law‏‎ (8 links)
  141. Electricity storage‏‎ (8 links)
  142. Loan‏‎ (8 links)
  143. Atomic mass‏‎ (8 links)
  144. Stirling engine‏‎ (8 links)
  145. Thermal equilibrium‏‎ (8 links)
  146. Bituminous coal‏‎ (8 links)
  147. Rain‏‎ (8 links)
  148. Electrode‏‎ (8 links)
  149. Opportunity cost‏‎ (8 links)
  150. Neutral line‏‎ (8 links)
  151. Carbon tax‏‎ (8 links)
  152. Human development index‏‎ (8 links)
  153. Trombe wall‏‎ (8 links)
  154. Fossil fuel extraction‏‎ (8 links)
  155. Evapotranspiration‏‎ (8 links)
  156. Carcinogen‏‎ (8 links)
  157. Marginal cost‏‎ (8 links)
  158. Hour‏‎ (8 links)
  159. Drive shaft‏‎ (8 links)
  160. Foot‏‎ (8 links)
  161. Supercapacitor‏‎ (8 links)
  162. Improving fuel economy‏‎ (8 links)
  163. Isobar‏‎ (8 links)
  164. Moderator‏‎ (8 links)
  165. Developed countries‏‎ (8 links)
  166. Solar collector orientation‏‎ (8 links)
  167. Ice melt‏‎ (8 links)
  168. Fuel consumption‏‎ (8 links)
  169. Insolation‏‎ (8 links)
  170. Earth's energy flow‏‎ (8 links)
  171. Carbon sink‏‎ (8 links)
  172. Northern Annular Mode‏‎ (8 links)
  173. Pareto Improvement‏‎ (8 links)
  174. Extreme weather events‏‎ (8 links)
  175. Specific heat capacity‏‎ (8 links)
  176. Biomagnification‏‎ (8 links)
  177. Flue gas‏‎ (8 links)
  178. Geology‏‎ (8 links)
  179. Elasticity vs plasticity‏‎ (8 links)
  180. Ash‏‎ (8 links)
  181. Run-of-the-river hydroelectricity‏‎ (8 links)
  182. Doping‏‎ (8 links)
  183. Alkene‏‎ (8 links)
  184. Ideal gas constant‏‎ (8 links)
  185. Barrel‏‎ (8 links)
  186. Anthropogenic carbon emissions‏‎ (8 links)
  187. Size of the universe‏‎ (8 links)
  188. In situ‏‎ (8 links)
  189. Coke‏‎ (8 links)
  190. Ppm‏‎ (8 links)
  191. Non-dispatchable source of electricity‏‎ (8 links)
  192. Electron hole‏‎ (8 links)
  193. Flow rate‏‎ (8 links)
  194. Capacitance‏‎ (8 links)
  195. Inertia‏‎ (8 links)
  196. Coal bed methane‏‎ (8 links)
  197. Common resource‏‎ (8 links)
  198. Diesel generator‏‎ (8 links)
  199. Tonne of oil equivalent‏‎ (8 links)
  200. Glaciation‏‎ (8 links)
  201. Market power‏‎ (8 links)
  202. Kinetic energy recovery system‏‎ (7 links)
  203. Thermohaline circulation‏‎ (7 links)
  204. N11 countries‏‎ (7 links)
  205. Energy density vs power density‏‎ (7 links)
  206. Water pollution‏‎ (7 links)
  207. Nuclear decay‏‎ (7 links)
  208. Mesozoic‏‎ (7 links)
  209. BWR‏‎ (7 links)
  210. Tail race‏‎ (7 links)
  211. Kaplan turbine‏‎ (7 links)
  212. Reserves/production ratio‏‎ (7 links)
  213. Carbon pool‏‎ (7 links)
  214. Life cycle analysis‏‎ (7 links)
  215. AC adapter‏‎ (7 links)
  216. OPEC‏‎ (7 links)
  217. Litre‏‎ (7 links)
  218. Conduction band‏‎ (7 links)
  219. Energy use per person‏‎ (7 links)
  220. Differential‏‎ (7 links)
  221. Nonlinearity‏‎ (7 links)
  222. Base (chemistry)‏‎ (7 links)
  223. Dam‏‎ (7 links)
  224. Profit‏‎ (7 links)
  225. Lever‏‎ (7 links)
  226. Chimney‏‎ (7 links)
  227. Free market‏‎ (7 links)
  228. Naphtha‏‎ (7 links)
  229. Isothermal‏‎ (7 links)
  230. Sea level rise‏‎ (7 links)
  231. Miles per gallon gasoline equivalent‏‎ (7 links)
  232. Environmental impacts of oil sands‏‎ (7 links)
  233. Specific power‏‎ (7 links)
  234. Economy‏‎ (7 links)
  235. Pelton turbine‏‎ (7 links)
  236. Sub-bituminous‏‎ (7 links)
  237. Capacity factor‏‎ (7 links)
  238. Energy vs power‏‎ (7 links)
  239. PV diagram‏‎ (7 links)
  240. Baseload power‏‎ (7 links)
  241. Photovoltaic effect‏‎ (7 links)
  242. Oil sands surface mining‏‎ (7 links)
  243. Crossflow turbine‏‎ (7 links)
  244. Environmental impacts of hydropower‏‎ (7 links)
  245. Primary vs end use accounting‏‎ (7 links)
  246. Natural gas formation‏‎ (7 links)
  247. Francis turbine‏‎ (7 links)
  248. Total cost‏‎ (7 links)
  249. Rotary engine‏‎ (7 links)
  250. Utility‏‎ (7 links)
  251. Forced convection‏‎ (7 links)
  252. Energy flow in ecosystems‏‎ (7 links)
  253. CANDU‏‎ (7 links)
  254. Thermal conductivity‏‎ (7 links)
  255. Oxidize‏‎ (7 links)
  256. Everyday force‏‎ (7 links)
  257. Barrels of oil equivalent‏‎ (7 links)
  258. Pigouvian tax‏‎ (7 links)
  259. Cartel‏‎ (7 links)
  260. Gaseous diffusion uranium enrichment‏‎ (7 links)
  261. Conservative force‏‎ (7 links)
  262. Fukushima nuclear accident‏‎ (7 links)
  263. Supercritical water cooled reactor‏‎ (7 links)
  264. Ground‏‎ (7 links)
  265. Eutrophication‏‎ (7 links)
  266. Fly ash‏‎ (7 links)
  267. Multimeter‏‎ (7 links)
  268. Fusion‏‎ (7 links)
  269. Global warming potential‏‎ (7 links)
  270. Collusion‏‎ (7 links)
  271. Fission chain reaction‏‎ (7 links)
  272. Excise tax‏‎ (7 links)
  273. Sustainable‏‎ (7 links)
  274. Energy for transportation by country‏‎ (7 links)
  275. Aromatic hydrocarbon‏‎ (7 links)
  276. Radiative forcing‏‎ (7 links)
  277. Anti-trust legislation‏‎ (7 links)
  278. Gross domestic product‏‎ (7 links)
  279. Brayton cycle‏‎ (7 links)
  280. Latitude‏‎ (7 links)
  281. Electromagnetic induction‏‎ (7 links)
  282. Tidal stream generator‏‎ (7 links)
  283. Alloy‏‎ (7 links)
  284. AC to DC adapter‏‎ (7 links)
  285. Peroxyacyl nitrate‏‎ (7 links)
  286. Planck's constant‏‎ (6 links)
  287. Natural gas reserve‏‎ (6 links)
  288. Water wheel‏‎ (6 links)
  289. Negative feedback‏‎ (6 links)
  290. Mass number‏‎ (6 links)
  291. Absolute pressure‏‎ (6 links)
  292. Weak force‏‎ (6 links)
  293. Private good‏‎ (6 links)
  294. Sea surface temperature‏‎ (6 links)
  295. Coal seam‏‎ (6 links)
  296. Daylighting‏‎ (6 links)
  297. Energy mix‏‎ (6 links)
  298. Substation‏‎ (6 links)
  299. Gauge pressure‏‎ (6 links)
  300. Harvesting algae‏‎ (6 links)
  301. Solution‏‎ (6 links)
  302. Hurricane‏‎ (6 links)
  303. Four stroke engine‏‎ (6 links)
  304. Transistor‏‎ (6 links)
  305. The pH scale‏‎ (6 links)
  306. Pacific Decadal Oscillation‏‎ (6 links)
  307. Electrical insulation‏‎ (6 links)
  308. Series circuit‏‎ (6 links)
  309. Earth Temperature without GHGs‏‎ (6 links)
  310. Cyclone separator‏‎ (6 links)
  311. Term loan‏‎ (6 links)
  312. Inclined plane‏‎ (6 links)
  313. Oil and gas traps‏‎ (6 links)
  314. Electrical component‏‎ (6 links)
  315. Glacial and interglacial periods‏‎ (6 links)
  316. Coefficient of performance‏‎ (6 links)
  317. Chemical isomer‏‎ (6 links)
  318. Silver‏‎ (6 links)
  319. Energy transformations‏‎ (6 links)
  320. Chernobyl nuclear accident‏‎ (6 links)
  321. Electricity as an energy currency‏‎ (6 links)
  322. Monopsony‏‎ (6 links)
  323. Coulomb's law‏‎ (6 links)
  324. Big Bang‏‎ (6 links)
  325. Static electricity‏‎ (6 links)
  326. Trillion cubic feet‏‎ (6 links)
  327. Club good‏‎ (6 links)
  328. Energy productivity‏‎ (6 links)
  329. Magnetic force‏‎ (6 links)
  330. Mass extinction‏‎ (6 links)
  331. Light emitting diode‏‎ (6 links)
  332. AC‏‎ (6 links)
  333. River‏‎ (6 links)
  334. Atomic mass unit‏‎ (6 links)
  335. North Atlantic Oscillation‏‎ (6 links)
  336. Food security‏‎ (6 links)
  337. Generation IV nuclear reactors‏‎ (6 links)
  338. Atlantic Multidecadal Oscillation‏‎ (6 links)
  339. Rolling resistance‏‎ (6 links)
  340. Phosphorus‏‎ (6 links)
  341. Cap rock‏‎ (6 links)
  342. Eonothem‏‎ (6 links)
  343. Solar water heating‏‎ (6 links)
  344. Standby power‏‎ (6 links)
  345. Geothermal gradient‏‎ (6 links)
  346. Forest fire‏‎ (6 links)
  347. Boltzmann's constant‏‎ (6 links)
  348. Mill race‏‎ (6 links)
  349. Aerosol‏‎ (6 links)
  350. Modes of climate variability‏‎ (6 links)
  351. Biome‏‎ (6 links)
  352. VOCs‏‎ (6 links)
  353. Hydrocarbon resource‏‎ (6 links)
  354. World electricity generation‏‎ (6 links)
  355. Electrical safety devices‏‎ (6 links)
  356. Bottom ash‏‎ (6 links)
  357. Inductance‏‎ (6 links)
  358. Fast breeder reactor‏‎ (6 links)
  359. Charge carrier‏‎ (6 links)
  360. Not in my back yard syndrome‏‎ (6 links)
  361. Electric power to the grid‏‎ (6 links)
  362. Heat wave‏‎ (6 links)
  363. Hydrocarbon derivative‏‎ (6 links)
  364. Impulse turbine‏‎ (6 links)
  365. Energy from ocean waves‏‎ (6 links)
  366. Nuclear isomer‏‎ (6 links)
  367. Levelized cost of energy‏‎ (6 links)
  368. Mining‏‎ (6 links)
  369. Hertz‏‎ (6 links)
  370. Jet fuel‏‎ (6 links)
  371. Run-of-the-river systems‏‎ (6 links)
  372. Power servant‏‎ (6 links)
  373. Public good‏‎ (6 links)
  374. Tax abatement‏‎ (6 links)
  375. Climate model‏‎ (6 links)
  376. Rotor‏‎ (6 links)
  377. Heating registers and vents‏‎ (6 links)
  378. Electric force‏‎ (6 links)
  379. Erathem‏‎ (6 links)
  380. Algae biofuel‏‎ (6 links)
  381. Solar spectrum‏‎ (6 links)
  382. Holocene‏‎ (6 links)
  383. Income tax‏‎ (6 links)
  384. Isotone‏‎ (6 links)
  385. Bernoulli's equation‏‎ (6 links)
  386. Offshore wind turbine‏‎ (6 links)
  387. Turgo turbine‏‎ (6 links)
  388. Negative climate feedback‏‎ (6 links)
  389. Mile‏‎ (6 links)
  390. Radioisotope thermal generator‏‎ (6 links)
  391. Nuclide‏‎ (6 links)
  392. Kerosene lantern‏‎ (6 links)
  393. Breeder reactor‏‎ (6 links)
  394. Supercritical coal plant‏‎ (6 links)
  395. Rotational kinetic energy‏‎ (6 links)
  396. Grounding‏‎ (6 links)
  397. Conventional vs unconventional resource‏‎ (6 links)
  398. Nuclear fuel cycle‏‎ (6 links)
  399. Value‏‎ (6 links)
  400. Normal force‏‎ (6 links)
  401. MWe‏‎ (6 links)
  402. Newton meter‏‎ (6 links)
  403. Home energy use‏‎ (6 links)
  404. Mercury (pollutant)‏‎ (6 links)
  405. Geochronology‏‎ (6 links)
  406. Biodiesel‏‎ (6 links)
  407. Types of PV cells‏‎ (6 links)
  408. Electrical insulator‏‎ (6 links)
  409. Humidity‏‎ (6 links)
  410. Sublimation‏‎ (6 links)
  411. Rainfall‏‎ (6 links)
  412. Boron‏‎ (6 links)
  413. Transmission (vehicle)‏‎ (6 links)
  414. Vehicle‏‎ (6 links)
  415. Nuclear fusion in the Sun‏‎ (6 links)
  416. Tire pressure‏‎ (6 links)
  417. Energy sector‏‎ (6 links)
  418. Public attitudes towards energy sources‏‎ (6 links)
  419. Electricity access‏‎ (6 links)
  420. Electrolyte‏‎ (5 links)
  421. Wind resource measurement‏‎ (5 links)
  422. El Nino‏‎ (5 links)
  423. Rotational energy‏‎ (5 links)
  424. Polluter pays principle‏‎ (5 links)
  425. Parallel circuit‏‎ (5 links)
  426. Geothermal power plants‏‎ (5 links)
  427. Arctic sea ice‏‎ (5 links)
  428. Ground level ozone‏‎ (5 links)
  429. Centrally planned economy‏‎ (5 links)
  430. PWR‏‎ (5 links)
  431. Solar wall‏‎ (5 links)
  432. El Nino Southern Oscillation‏‎ (5 links)
  433. Steam assisted gravity drainage‏‎ (5 links)
  434. Manganese‏‎ (5 links)
  435. Zinc‏‎ (5 links)
  436. Diesel vs gasoline engine‏‎ (5 links)
  437. Potassium‏‎ (5 links)
  438. Cubic meter‏‎ (5 links)
  439. Black carbon‏‎ (5 links)
  440. Ozone layer‏‎ (5 links)
  441. Energy from nuclei‏‎ (5 links)
  442. Short ton‏‎ (5 links)
  443. Oligopsony‏‎ (5 links)
  444. Farad‏‎ (5 links)
  445. Aquifer‏‎ (5 links)
  446. Gravitational field‏‎ (5 links)
  447. Uranium hexafluoride‏‎ (5 links)
  448. Plate tectonics‏‎ (5 links)
  449. Flaring‏‎ (5 links)
  450. Bioethanol‏‎ (5 links)
  451. Gasoline station‏‎ (5 links)
  452. Wire gauge‏‎ (5 links)
  453. Isobar (pressure)‏‎ (5 links)
  454. Transportation of liquefied natural gas‏‎ (5 links)
  455. Condensation‏‎ (5 links)
  456. Mechanical equivalent of heat‏‎ (5 links)
  457. Energy security‏‎ (5 links)
  458. Methanol‏‎ (5 links)
  459. Glacial lake outburst flood‏‎ (5 links)
  460. Alkyne‏‎ (5 links)
  461. Air conditioning‏‎ (5 links)
  462. Braking‏‎ (5 links)
  463. Wall assembly‏‎ (5 links)
  464. Argon‏‎ (5 links)
  465. Logarithmic scale‏‎ (5 links)
  466. Sievert‏‎ (5 links)
  467. Electrical load‏‎ (5 links)
  468. Air infiltration and exfiltration‏‎ (5 links)
  469. Peaking power‏‎ (5 links)
  470. Fiscal incentive‏‎ (5 links)
  471. SAGD‏‎ (5 links)
  472. Hubbert's peak‏‎ (5 links)
  473. Wiens Law‏‎ (5 links)
  474. Main Page‏‎ (5 links)
  475. Regenerative braking system‏‎ (5 links)
  476. Organization of petroleum exporting countries‏‎ (5 links)
  477. Hydrocarbon cracking‏‎ (5 links)
  478. Kph‏‎ (5 links)
  479. Fluid mechanics‏‎ (5 links)
  480. Convertible loan‏‎ (5 links)
  481. Source rock‏‎ (5 links)
  482. Types of wind turbines‏‎ (5 links)
  483. Year‏‎ (5 links)
  484. Fracturing fluid‏‎ (5 links)
  485. Pound-feet‏‎ (5 links)
  486. Geologic series‏‎ (5 links)
  487. Alcohol‏‎ (5 links)
  488. Fuel consumption vs fuel economy‏‎ (5 links)
  489. Life cycle assessment‏‎ (5 links)
  490. Odorant‏‎ (5 links)
  491. Heat capacity‏‎ (5 links)
  492. Weir‏‎ (5 links)
  493. Oil sands tailings ponds‏‎ (5 links)
  494. Nuclear shell model‏‎ (5 links)
  495. Life expectancy‏‎ (5 links)
  496. Psig‏‎ (5 links)
  497. Geologic stage‏‎ (5 links)
  498. Isochore‏‎ (5 links)
  499. Long tail-pipe problem‏‎ (5 links)
  500. Likelihood‏‎ (5 links)

View (previous 500 | next 500) (20 | 50 | 100 | 250 | 500)