fschieber/wit-captions huggingface dataset:
Adunarea funcțiilor: Suma funcției sinus cu exponențiala este 
  
    
      
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    {\textstyle sin+exp:\mathbb {R} \rightarrow \mathbb {R} }
  
cu 
  
    
      
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    {\textstyle (sin+exp)(x)=sin(x)+exp(x)}
Tornitura dei cerchioni della sala montata di una locomotiva a vapore nella Dampflokwerk Meiningen nel 2008. Il cerchione è la parte del rodiggio che genera l'aderenza tra la ruota e la rotaia e, quindi, il moto dell'unità di trazione. Essendo soggetto a notevole usura, viene periodicamente sottoposto a tornitura per riportarne il profilo alle specifiche di progetto. L'officina di Meiningen è una delle poche officine ferroviarie rimaste nel mondo in grado di sottoporre a riparazione le locomotive a vapore, effettuando se necessario la costruzione a nuovo di parti di esse anche di grande impegno costruttivo come le caldaie[Nota 1].
Deutsch: Radsatz-Drehbank im Dampflokwerk Meiningen, Baujahr 1942, hergestellt in der Maschinenfabrik Deutschland (Dortmund) English: lathe for railway wheels in steam loco workshop Meiningen, Germany
V 21. století je jako štěrbinová skalka propagována kompozice tvořená horninou kladenou na zcela rovný terén. Nakladená hornina vytvoří kupu. Stejnosměrně podélně kladené kameny, jsou podle návodů uloženy v pískovém loži. Obvykle je součástí i několik velkých bloků přepravovaných nakladači, ty tvoří vysoké části. Malé kameny tvoří nízké části. Podle vlastností dalších částí kompozice nebo umístění v celku stavební architektury může hřeben kamenů vypadat vhodně nebo kýčovitě. Kameny a jejich použití je v této úpravě důležitější než výběr, použití a úprava rostlin. Z uvedeného vyplývá, že jde více o sochařské umění než zahradničení.
Čeština: Varianta štěrbinové skalky.
A stylized illustration of the Great Escarpment, based particularly on its appearance in the Great Karoo, where thick erosion resistant dolerite sills (see below; represented here by the thick black lines. The thinner dolerite sills are not drawn in this diagram to avoid clutter) generally form the upper, sharp edge of the escarpment. (In other parts of the escarpment, hard erosion-resistant geological layers similarly form the upper, abrupt edge.) Note the island remnants of the earlier extent of the plateau on the plain below the escarpment (the Lower Karoo), left behind as the escarpment has gradually eroded further inland.[10]
English: A stylized illustration of the South African Great Escarpment, based particularly on its appearance in the Great Karoo, where thick erosion resistant dolerite sills generally form the upper, sharp edge of the escarpment. Note the island remnants of the the earlier extent of the plateau on the plain below the escarpment, left behind as the escarpment has gradually eroded progressively further inland.
Spanningsdeler karakteristiek van een logaritmische potentiometer. Blauw: Theoretische DF (= deelfactor van de potmeter) als functie van de hoekverdraaiing, berekend met: Hoekverdraaiing = 300 · log(9 · DF + 1). DF varieert van 0 tot 1, het argument x van log(x) varieert van 1 tot 10, log(x) zelf varieert van 0 tot 1, en de hoekverdraaiing van 0° tot 300° (maximum hoekverdraaiing). Rood: Lineaire benadering van de logaritmische functie door 3 secties in de weerstandsbaan aan te brengen: 
 Sectie A:hoek 0°-134°, weerstand per cm: R
 Sectie B:hoek 134°-222°, weerstand per cm: R·2,56
 Sectie C:hoek 222°-300°, weerstand per cm: R·4,37
Voltage division characteristic of a single turn logarithmic potentiometer. Blue: theoretical logarithmic relationship, red approximation with 3 linear resistance regions: A: 0 - 135 degrees axis rotation with resistance per cm: R B: 135 - 220 degrees axis rotation with resistance per cm: R*2.56 C: 220 - 300 degrees axes rotation with resistance per cm: R*4.37 Theoretical curve calculation: Degrees Knob rotation = 300 * log (9 * VDF +1). VDF = voltage division factor varies between 0 and 1, argument log varies between 1 and 10, log varies from 0 to 1, degrees vary from 0 to 300 degrees (=maximum rotation. So, the knob position is a logarithmic function of the VDF and not the other way around.
L'algorithme de suppression–contraction applique au graphe diamant. Les arêtes rouges sont supprimées dans l'enfant gauche, contractées dans l'enfant droit. Le polynôme résultant est la somme des monômes des feuilles, 
  
    
      
        
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    {\displaystyle x^{3}+2x^{2}+y^{2}+2xy+x+y}
  
. Basé sur (Welsh et Merino 2000).
This 1866 engraving depicts Washington praying at Valley Forge. In 1918, the Valley Forge Park Commission declined to erect a monument to the prayer because they could find no evidence that the event had occurred. In 1945, an article was published by the Valley Forge Historical Society in which the writer presents the accounts of the purported incident and, while acknowledging the second hand records of the tradition "lack ... the authentication with which the historian seeks to monument his recordings in all the solemnity of established fact," rhetorically asks if it is unreasonable to believe the event might have occurred.[1][2]
English: George Washington praying at Valley Forge.
Saldırı sonrası Nagasaki'nin Sannō Jinja (ground zero'nun 800 metre güneydoğusu) civarı. 24 Eylül 1945 tarihinde Strategic Bombing Survey'nin incelemesi sırasında Deniz Piyade Onbaşısı Lynn P. Walker, Jr. tarafından çekildi. Önde Kannon Bosatsu ve Jizō Bosatsu heykelleri, sağ tarafında "Ipponbashira Torii" ("Tek Sutünlü Torii") görülmektedir. İleride solda Chinzei Gakuin Ortaokulu Takenokubo Kampüsü (ground zero'nun 500 metre güneybatısı, günümüzde Kassui Lisesi), ortada Shiroyama Millet Okulu (ground zero'nun 500 metre batısı, günümüzde Shiroyama İlkokulu), Arkasında görülen tepe ise Iwaya Dağı'dır. (Sakamoto mahallesi, Nagasaki)
English: Battered religious figures stand watch on a hill above a tattered valley. Nagasaki, Japan. September 24, 1945, 6 weeks after the city was destroyed by the world's second atomic bomb attack. Photo by Cpl. Lynn P. Walker, Jr. (Marine Corps) NARA FILE #: 127-N-136176 Français : Statues religieuses fracturées sur une colline au dessus d'une vallée entièrement détruite. Nagasaki, Japon, 24 septembre 1945, 6 semaines après la destruction de la ville par le deuxième bombardement atomique de l'histoire. Русский: Фото разрушенного храма в Нагасаки, сделанная через 6 недель после бомбардировки. Нагасаки, Япония, 24 сентября 1945 года. Türkçe: Atom bombası saldırısı sonrasında Nagasaki'nin Urakami bölgesinde yer alan Sakamoto mahallesinin görünümü. 24 Eylül 1945 tarihinde Strategic Bombing Survey'nin incelemesi sırasında Deniz Piyade Onbaşısı Lynn P. Walker, Jr. tarafından çekildi. Önde Kannon Bosatsu ve Jizō Bosatsu heykelleri, sağ tarafında Sannō Jinja (ground zero'nun 800 metre güneydoğusu)'nın "Ipponbashira Torii" ("Tek Sutünlü Torii")'si görülmektedir. İleride solda Chinzei Gakuin Ortaokulu Takenokubo Kampüsü (ground zero'nun 500 metre güneybatısı, günümüzde Kassui Lisesi), ortada Shiroyama Millet Okulu (ground zero'nun 500 metre batısı, günümüzde Shiroyama İlkokulu), Arkasında görülen yükselti ise Iwaya Dağı'dır.
Figure 2. Different anterior chamber depths as seen from the lateral perpendicular (profile) view. The more forward the pupil is, the shallower the anterior chamber. In the leftmost photo, the pupil is relatively posterior (set back), indicating an EZ ratio of < 0.5 and an anterior chamber deeper than 2.5 mm. In the middle photo, the pupil is midway between the sclera posteriorly and the cornea anteriorly, indicating an EZ ratio of 0.5, and a medium chamber depth of about 2.5 mm. In the rightmost photo, the pupil is very anterior (forward), indicating an EZ ratio of more than 0.5 and a shallow anterior chamber of less than 2.5 mm.
English: Three right eyes viewed from the perpendicular lateral position. As can be intuitively learned from the relative antero-posteroir position of the pupil, the anterior chamber is deepest in the left most eye, is medium in the middle one and shallowest in the right most eye. This is the basis for the EZ ratio method of estimating the anterior chamber depth
Machmeter in Kombination mit einem Fahrtmesser. Es ist gut zu sehen, dass die Machmeter-Skala unterhalb der TAS-Skala verschiebbar bzw. verdrehbar angeordnet ist. Dadurch ist gewährleistet, dass die aktuelle Mach-Zahl und TAS-Geschwindigkeit korrelieren und mit einem Zeiger angezeigt werden können. Der weiße Dreieckpfeil links zeigt die normale Reisefluggeschwindigkeit, der rote Strich knapp darüber die MMO. (Nebenbei kann bemerkt werden, dass sich "M1,00" auf der Machmeter-Skala deckungsgleich mit "600 kn" auf der TAS-Skala gegenüber stehen, was unter Standardbedingungen einer Flughöhe von knapp 26.000 ft (≈ 7.900 m) entspricht.)
English: To observe both limits VMO and MMO, the pilot of a jet airplane needs both an airspeed indicator and a Machmeter, each with appropriate red lines. In some general aviation jet airplanes, these are combined into a single instrument that contains a pair of concentric indicators, one for the indicated airspeed and the other for indicated Mach number. Each is provided with an appropriate red line. [Figure 15-8]
തൃശ്ശൂർ ജില്ലയിലെ നെടുപുഴയ്ക്കു പടിഞ്ഞാറു ഭാഗത്തുള്ള താണിക്കമുന്നയം എന്ന കോൾ പ്രദേശത്തുനിന്നും കിഴക്കോട്ടും പടിഞ്ഞാട്ടും നോക്കിയാൽ കാണാവുന്ന ഒരു വിശാലവീക്ഷണമാണു് മുകളിലെ ചിത്രങ്ങളിൽ. കേരളത്തിന്റെ പശ്ചിമതീരങ്ങളിൽ സാമാന്യമായി കാണാവുന്ന തണ്ണീർത്തടങ്ങൾക്കും ചതുപ്പുപ്രദേശങ്ങൾക്കും നല്ലൊരു ദൃഷ്ടാന്തമാണു് ഈ കാഴ്ച. വ്യത്യസ്തവും അപൂർവ്വവുമായ സസ്യജന്തുവൈവിദ്ധ്യം പുലർത്തുന്ന ഈ ഭൂപ്രദേശങ്ങൾ ദീർഘദൂരസഞ്ചാരികളായ പല പക്ഷികൾക്കും ഒരു ഇടത്താവളം കൂടിയാണു്. മഴക്കാലത്തു് ഏറെയും മുങ്ങിക്കിടക്കുന്ന ആഴം കുറഞ്ഞ ഇത്തരം സമതലങ്ങൾ വേനലാവുന്നതോടെ മിക്കവാറും വരണ്ടു പോകുകയോ ചതുപ്പു മാത്രമായി അവശേഷിക്കുകയോ ചെയ്യുന്നു. (ചിത്രങ്ങൾ വലുതാക്കിക്കാണാൻ ക്ലിക്കു ചെയ്യുക)
English: Viewed towards west, this panoramic view is captured from the village "Thanikkamunnayam", near Nedupuzha,Thrissur, Kerala. A typical scene along the shallow wetlands that line the western coastal area of picturesque land of Kerala, the place is abundant with life. Various species of fresh water and wetland species, many of them unique to the region can be seen in such terrains. It is also a point in the long itineraries of several migrating birds. During monsoon, these lands are filled with water. However, most of the shallow plains become either marshes or completely dried up after the rains are gone. മലയാളം: തൃശ്ശൂര്‍ ജില്ലയിലെ നെടുപുഴയ്ക്കു പടിഞ്ഞാറു ഭാഗത്തുള്ള താണിക്കമുന്നയം എന്ന കോള്‍ പ്രദേശത്തുനിന്നും പടിഞ്ഞാറുദിശയിലുള്ള ള്ള ഒരു വിശാലവീക്ഷണമാണു് ചിത്രത്തില്‍. കേരളത്തിന്റെ പശ്ചിമതീരങ്ങളില്‍ സാമാന്യമായി കാണാവുന്ന തണ്ണീര്‍ത്തടങ്ങള്‍ക്കും ചതുപ്പുപ്രദേശങ്ങള്‍ക്കും നല്ലൊരു ദൃഷ്ടാന്തമാണു് ഈ കാഴ്ച. വ്യത്യസ്തവും അപൂര്‍വ്വവുമായ സസ്യജന്തുവൈവിദ്ധ്യം പുലര്‍ത്തുന്ന ഈ ഭൂപ്രദേശങ്ങള്‍ ദീര്‍ഘദൂരസഞ്ചാരികളായ പല പക്ഷികള്‍ക്കും ഒരു ഇടത്താവളം കൂടിയാണു്. മഴക്കാലത്തു് ഏറെയും മുങ്ങിക്കിടക്കുന്ന ആഴം കുറഞ്ഞ ഇത്തരം സമതലങ്ങള്‍ വേനലാവുന്നതോടെ മിക്കവാറും വരണ്ടു പോകുകയോ ചതുപ്പു മാത്രമായി അവശേഷിക്കുകയോ ചെയ്യുന്നു.
Absorber with remote-reservoir connected rigidly, compared to most shock absorbers. It uses a diaphragm instead of a membrane, and does not contain a control valve for expansion of the pneumatic chamber.
 Description:
  1) Sheath and gas tank 
  2) Stem 
  3) Snap rings 
  4) Plate bearing spring 
  5) Spring 
  6) End cap and preload adjustment 
  7) Cap gas, present in versions both with or without gas valve (inverted profile) 
  8) Mobile diaphragm 
  9) Pad switch (compression) 
  10) Wiper 
  11) Oil seal assembly, and shock seal 
  12) Negative buffer pad or limit switch (extension) 
  13) Piston with sliding blades and seal
Italiano: Ammortizzatore con serbatoio a gas collegato rigidamente, rispetto alla maggior parte dei ammortizzatori a serbatoio separato viene usato un diaframma invece della membrana e non è presente la valvola di controllo dell'espansione della camera pneumatica. Descrizione: 1) Fodero e serbatoio gas 2) Stelo 3) Anelli seeger 4) Piattello di appoggio della molla 5) Molla 6) Piattello e regolazione del precarico 7) Tappo gas, sia nella versione senza valvola gas sia nella versione con valvola gas (profilo inverso) 8) Diaframma mobile 9) Tampone finecorsa (compressione) 10) Raschiapolvere 11) Gruppo di tenuta, paraolio e basi del paraolio e chiusura ammortizzatore 12) Tampone negativo o Tampone finecorsa (estensione) 13) Pistone con lamelle e segmento di tenuta/scorrimento English: Absorber with gas tank connected rigidly, compared to most shock absorbers. It uses a diaphragm instead of a membrane, and does not contain a control valve for expansion of the pneumatic chamber. Description: 1) Sheath gas tank and 2) Stem 3) snap rings 4) Plate bearing spring 5) Spring 6) End cap and preload adjustment 7) Cap gas, either in the gas valve is not in the version with the gas valve (inverted profile) 8) Diaphragm Mobile 9) Pad switch (compression) 10) Wiper 11) A seal assembly, oil seal oil seal and bases and closing damper 12) Buffer Buffer or negative limit switch (extension) 13) Piston with piston ring and strip / sliding
9 portaaeronaves en Norfolk el 20 de diciembre de 2012:   De izquierda a derecha:
  * portaaviones USS Dwight D. Eisenhower (CVN-69)   * portaaviones USS George H. W. Bush (CVN-77)   * portaaviones USS Enterprise (CVN-65)  * buque de asalto anfibio USS Bataan (LHD-5)   * portaaviones USS Abraham Lincoln (CVN-72)   * portaaviones USS Harry S. Truman (CVN-75)   * buque de asalto anfibio USS Wasp (LHD-1)   * buque de asalto anfibio USS Kearsarge (LHD-3)   * buque de asalto anfibio USS New York (LPD 21)   * buque de asalto anfibio USS Iwo Jima (LHD-7)    y varios cruceros, destructores, fragatas y submarinos de la flota del Atlántico.
English: 9 Flattops at Norfolk naval base, December 20, 2012 : From bottom to top, front to back: Aircraft carrier DWIGHT D. EISENHOWER (CVN 69) Aircraft carrier GEORGE H. W. BUSH (CVN 77) Aircraft carrier ENTERPRISE (CVN 65) Amphibious assault ship BATAAN (LHD 5) Aircraft carrier ABRAHAM LINCOLN (CVN 72) Aircraft carrier HARRY S TRUMAN (CVN 75) Amphibious assault ship WASP (LHD 1) Amphibious assault ship KEARSARGE (LHD 3) Amphibious landing platform dock NEW YORK (LPD 21) A T-AKE dry cargo ammunition ship Amphibious assault ship IWO JIMA (LHD 7) and various cruisers, destroyers, frigates and submarines of the U.S. Atlantic Fleet.
Ungenauer Übersichtsplan auf der Infotafel vor der Burg (Nach der Aufnahme im Kunstdenkmälerinventar von 1916): 1: Halsgraben (Vor der Toranlage im Westen liegt in der Realität eine Geländestufe zur Vorburg, kein Graben) 2: Das angebliche Haupttor (Zeune) 3: Das Neben- (Zeune) oder tatsächliche Haupttor 4,5: Aufgänge ins Obergeschoss des Torgebäudes 6: Die angebliche Torgasse des Haupttores 7: Der Burgbrunnen 8: Die Tankzisterne 9: Der Nordwestfelsen mit der Tankzisterne 10: Der Nordostfelsen 11: Ostfels mit den letzten Mauerresten 12: Burghof, nicht eingezeichnet ist das Geländeprofil mit Höhenunterschieden von bis zu drei Metern
This is a plot of the light cones  of the v-r coordinates where the v axis is a straight line slanted up to the left. The blue line is an example of one of the v constant lines. Plotted are the light cones at various values of r. The green lines are various u constant lines. Note that they approach r=2GM assymptotically. In these coordinates, the horizon is the black hole horizon (nothing can come out). The diagram for u-r coordinates is the same diagram turned upside down and with u and v interchanged on the diagram. In that case the horizon is the white hole horizon, which matter and light can come out of, but nothing can go in.
English: Eddington Finkelstein plot of light cones for advanced coordinates.
जर्मनों को ब्रैंडेनबर्ग गेट के सामने दीवार के ऊपर खड़े होने से पहले ही फाड़ दिया गया था                                                                                                               __________________________________                                                                                                  तारीख  : 9 नवंबर 1989; 30 वर्ष पूर्व                                                           समय    : 18: 53-19: 01 सीईटी (प्रेस कॉन्फ्रेंस)                                             स्थान    : बर्लिन की दीवार                                                                     कारण  : 1989 के क्रांतियाँ
العربية: مواطنون فوق جدار برلين بالقرب من بوابة براندنبرج في 9 نوفمبر 1989 Deutsch: Menschen auf der Berliner Mauer nahe dem Brandenburger Tor am 9. November 1989 Aufschrift auf dem Schild: „Achtung! Sie verlassen jetzt West-Berlin“, übersprüht mit der Frage „Wie denn?“ English: People atop the Berlin Wall near the Brandenburg Gate on 9 November 1989. The text on the sign "Achtung! Sie verlassen jetzt West-Berlin" ("Notice! You are now leaving West Berlin") has been modified with an additional text "Wie denn?" ("How?"). Also in blue is the logo for ONCE, whose cycling team was started in 1989 Español: Personas trepadas sobre el muro de Berlín, cerca de la puerta de Brandeburgo, el 9 de noviembre de 1989. El texto de la señal —Achtung! Sie verlassen jetzt West-Berlin, ‘¡Atención! Está por abandonar Berlín Oriental’— presenta un grafiti que añade: Wie denn?, ‘¿Cómo?’.
La paraula casta es va començar a fer servir com a sinònim de classe social durant les missions portugueses a l'Índia. Molts indis en l'actualitat han expressat la idea que la imatge negativa del sistema de classes es va produir durant l'ocupació britànica, els quals van difondre la idea de discriminació racial associada a la de casta. Es reivindica, en canvi que les castes índies, les anomenades jāti eren una forma administrativa tribal, un concepte més semblant al de clan establert a Escòcia, que no tenia res a veure amb la discriminació racista. En aquesta fotografia del 1916 es poden veure membres de la casta índia dels Basor.
English: "Basors making baskets of bamboo." from The Tribes and Castes of the Central Provinces of India Volume II Author: R. V. Russell
Figure 8: LG=Leaving Group; Green coloring indicates the bond from which electrons are being donated. Red coloring indicates the bond that is being broken and the electrons involved in that bond. (a) The two main routes to the 2-nobornyl cation are the σ route (top) and the π route (bottom). (b) The σ route involves electrons from the σ bonding orbital between carbons 1 and 6 being donated into the σ* anti-bonding orbital between carbon 2 and the leaving group. (c) The π route involves electrons from the π bonding orbital between carbons 1 and 2 being donated into the σ* anti-bonding orbital between carbon 6 and the leaving group.
English: LG=Leaving Group; Green indicates the bond from which electrons are being donates. Red indicates the bond that is being broken and the electrons that are being sequestered to the leaving group. (a) The two main routes to the 2-nobornyl cation are the sigma route (top) and the pi route (bottom). (b) The sigma route involves electrons from the sigma bond between carbons 1 and 6 being donated into the sigma anti-bond between carbon 2 and the leaving group. (c) The pi route involves electrons from the pi bond between carbons 1 and 2 being donated into the sigma anti-bond between carbon 6 and the leaving group.
Une onde plane correspondant à une particule d'une masse effective de 0,067 fois la masse de l'électron, d'énergie 0,08 eV est incidente sur une barrière de potentiel rectangulaire simple, de 0,1 eV. Le schéma révèle la densité de probabilité de présence associée à cet état stationnaire. Le côté gauche révèle le phénomène d'interférence entre l'onde incidente et l'onde réfléchie. La partie tunnel (dans la barrière) provient de la combinaison de deux exponentielles, respectivement décroissantes de gauche à droite, et de droite à gauche. À droite, l'onde plane transmise se révèle par une densité de probabilité de présence constante.
Français : exemple de densité de probabilité de présence, barrière tunnel Description de l'image : schéma montrant la densité de probabilité de présence dans le cas d'une barrière rectangulaire simple, cas du comportement tunnel. Source : créée pour illustation de l'article effet tunnel. Statut : Licence de documentation libre GNU (GFDL : GNU Free Documentation Licence).,
Le COX producono la prostaglandina H2 (PGH2) dall'acido arachidonico (AA) in due reazioni chimiche consecutive. La PGH2 è quindi convertita in altri prostanoidi (sul fondo) da enzimi tessuto-specifici detti isomerasi. Nel primo step della reazione, due moli di ossigeno sono aggiunte all'acido arachidonico per formare l'intermedio "prostaglandina G2" (PGG2), nella reazione di cicloossigenazione propriamente detta. Questa prima reazione è seguita dalla perossidasi che avviene in due diverse posizioni dell'enzima. Oltre alle prostaglandine, le COX producono anche piccole quantità di metaboliti dell'AA mono-ossigenati, noti come HETE.
English: COX2 arachidonic acid
Gunn diode oscillator load lines.
 DCL: DC load line, which sets the Q point.
 SSL: negative resistance during startup while amplitude is small. Since 
  
    
      
        r
        
        <
        
        R
      
    
    {\displaystyle r\;<\;R}
  
 poles are in RHP and amplitude of oscillations increases.
 LSL: large-signal load line. When the current swing approaches the edges of the negative resistance region (green), the sine wave peaks are distorted ("clipped") and 
  
    
      
        r
      
    
    {\displaystyle r}
  
 decreases until it equals 
  
    
      
        R
      
    
    {\displaystyle R}
  
.
Example of a joule thief circuit driving an LED. The coil consists of a standard ferrite toroid core with two windings of 20 turns each using 0.15 mm (0.006 inch) diameter wire (38 swg) (34-35 AWG). The circuit can utilize an input voltage down to about 0.35 V and can run for weeks using a 1.5 V LR6/AA. The battery voltage is usually 1.5 V. The resistor is ~1 kΩ, 1/4 W. The transistor could be a 2N3904, BC547B, 2SC2500, BC337, 2N2222, 2N4401 or other NPN. Vceo= 30 V, P= 0.625 W. A white light-emitting diode with Vf= 3.2 V might be used.[8]   The waveform of an operating joule thief, showing a 30% duty cycle at approximately 40 kHz
Es posible rellenar el plano con polígonos que no unan sus esquinas, por ejemplo el uso de rectángulos, como en el patrón de los ladrillos de la pared. El representado en la imagen no es un buen teselado debido a que las esquinas parten a lo largo del borde de un ladrillo vecino. Del mismo modo, en un panal propiamente dicho no debe haber bordes o vértices que parten a lo largo de la cara de una celda vecina. Sin embargo, si interpretamos cada cara de un ladrillo como un hexágono con dos ángulos interiores de 180 grados, el patrón resultante sí será un teselado correcto. Sin embargo, no todos los geómetras aceptan tales hexágonos.