Bestand wählen
Merken

# Master class with Alan Guth

Embed Code
DVD bestellen

#### Automatisierte Medienanalyse

Beta
Erkannte Entitäten
Sprachtranskript
OK with start dabbling in there
when the right-hand side is a term proportional to the energy density ratio of mass density and determine Washington pressure I would portion pressure is divided by square indicating that has the look of relativistic corrections which which is but what the equation tell us said that parliament pressure that McMaster cities and slowed down the expansion of the universe that Monestime means that the acceleration of scale factors negative it's slowing down both the pressure to be negative it can overcome the mass density and other changes on the whole thing and in fact if the energy is dominated by the potential energy industry field there the pressure has a unique value it's minus wrote on the square this negative of the energy density and if you put that into this equation you'll see that at that give your negative term which is 3 times as big as a positive terms reversing the sign causing gravity to become repulsive I I didn't have a slide justify this formula but I think I can do it on the screen I think maybe it's worth doing said such important players that I know of 2 simple derivations I'll show you both and whichever 1 appeals to you you remember 1 of them is based on our relativity where I want to imagine is a stage there were just the state whose energy is dominated by the potential energy of a scalar field so what they consider a state where there's a scalar field with some potential energy function which and let me imagine the potential energy function like that of the unique minimum there at non-zero value this is just a toy see or feel the thing about but allows us to construct a state whose energy consists entirely of introduces your field and therefore to be dominated by the introduced field it's a state of type 1 thing about the important thing about that state is this completely Lorentz invariant scalar looks St. all observers as with guarantees so if you were moving at some high velocity relative to the observer who do this plot using the same naive scalar field as he sings that reaching the same stage and that means that the energy movement with a asked to be Lorenzen Wright because the state is 1 tonight so as to observers removing a different color velocities if 1 sees a certain momentum cancer that investing the same management attention he said and state and there is only 1 cancer that's invariant under influence boosts and that is the magic cancer itself so the claim is that Lorenzen variants implies that the energy momentum cancer continue past a vehicle to a constant at times in special relativity while the court it you the special relativity metric on In New New depending on your signed conventions something like minus 1 2 0 0 1 2 0 1 2 2 1 0 0 0 2 2 1 now the space-time terms of the are under pressure and he 0 0 is the evidence of the and this formed says immediately that the pressure has to be just equal to minus the area today and a simple as that so you get exactly this formula pressures minus the events of the last of the country's square yes so this side of the matter yeah the sigh cancer does matter is it's still true that people miners were as he scurried away but the monkeys Peace positively case Rose has the opposite side so far as this gravitational Paulson's concerned it's had negative pressures that create gravitational ripples so it's only when Rose positive and he is negative you get gravitational repulsion the signs of the other way around if Roe were negative them .period positive and it will contribute to the gravitational deceleration to the provisional tractors yesterday it turns out observation was that the evidence Iraq intends seems to be positive and promising universe so but it would have been just as logical as far as anything we that could be the other way around that viewers could have been decelerating due to negative acumen militants OK so it was argued the 1 I argument number 2 is a conservation energy argument for unanimity that believe that it's OK for space to stretch a release for a region with a scalar field and to change sides but will you guessed so let me magic for argument to that I have a at piston chamber with the the potential energy of a scalar field of greater than 0 inside and uniform and the energy being 0 outside and again Sheffield have mine could be 1 very much like this except I guess I'd need for it to have a 0 someplace so I have potential and turnover so this is the outside this is the inside those that values the values Scoville inside that values the values fulfilled outside and now I advance myself what happens if I pull out on his list in Geneva but if I do that it will cost in large volume Of the region inside I don't know for normal gas or something like that if you a larger volume the energy density would go down but for this year feel they can do that the university is here the only way to get to their is to somehow Tomilova over this barrier maybe some classical Boston come push it over there but they just sitting here I'm not going wait long enough at a time coalition with its longtime I stuck here and in no way intended to go down that's the situation I want to imagine that the Schofield inside the boxes sitting at this local minimum of potential energy function so it cannot go down and so when you pull out of the Pistons the energy density inside the piston chamber remains constant but under the volume has increased so the total area is gone out what's
happened happened hello well terminology can go up some put energy into it and what that means is that in order to enlarge this volume up I would have to put energy and my polling forcefully outward on system to only way it can acquire the energy needs of volume to increase at a fixed energy density and if I have to exert a force deployments Western that means that the pressure gradient pushing interest words we have your pressure outward outsiders just as good an ordinary empty vacuum outside the region with the negative pressure inside at to balance due to give us that force which is needed for energy conservation and could be quite simple but I still won't bother writing them down good right and then you get exactly the way that we have won the screen and we will get back shortly still there of how so
it's another argument which guarantees that any positive energy density in a scalar field I have to be accompanied by a negative person of the same magnitude exactly the same magnitude you can't people happy with those arguments so negative pressures exist General 77 negative pressures produced gravitational Paulson television would also exists and that it is in fact the secret behind inflation high inflation proposes that the current expansion of the Big Bang was driven by the repulsive force of gravity caused by the negative pressure of some scalar field the new get the same because it's the energy density Rose amassed today also this as I can tell you that the pressure is equal to make an innocent civilians here either a melody as a grow when actual maddening but so that the matter and I'll be honest I'm a little mystified about how these arguments contends are different and give the same answer but it must have something to do with the consistency of physics in the 1st place yes please even if negative rhetoric and today it's also is moving later "quotation mark everything is that's right all this determine here's the acceleration not the sign of the velocity so it's like they're throwing the ball in the air grandiose calls a downward with the ball go up or down and scented with universes they could expand or contract and so our universe happens to be standing and if you ask what is the effect of this repulsive gravity fever starts out static that will cause it to expand the universe started out imploding it would cause it to slow down its implosion and all the back and I will always cause expansion in the future but it's is an acceleration so it's similar to throwing the ball in the air and does not determine the loss of a OK to continue and so there are basically 2 kinds of inflationary scenario is the sum of both based on the idea that gravitational portions caused by potential energy of a stellar field the earliest and simplest is what was called no inflation might wonder why new inflation was the earliest of the reason is that old inflation didn't work I won't discuss that now madam Porter and so on no inflation assumed that a potential energy function were still feel that looked something like this with 1 way closer resembles a potential function quality in the wake of the Higgs field of the Standard Model particle physics and he inflation occurred with the skillful perched on top of this plateau His state that sometimes called the false vacuum but the entomology this word false vacuum is In the context of a quantum field theory that vacuum is the state of lowest possible energy density as you said there is no good reason for that necessarily be 0 but whatever the state of lowest possible energy density is a quantum field theory that defines vacuum this state where the scalar field is perched on top of a hill there is certainly not the vacuum because the scale fuel can roll down the hill the bottom where the potential energy is closed lower but the assumption here is that the amount of time that that takes is long by released early universe standards so temporarily this your field stuck at the top of the hill visages doesn't have time to get down and that is that temporarily this acts as forward the state of Lowe's possible energy Hensley says a temporary vacuum when the word false and false vacuum really means temporary vacuum so efficient stomach with the case the potential energy and skill feel dominates the situation has drawn and will continue to dominate until the skillful rolls off the hill and the assumptions that that takes too long for takes a lot longer than messages in things happened before in particular inflation but so inflation occurs while the skeletal list on top of a hill dominated by that potential energy this 2nd scenario here called chaotic inflation invented by 180 in 1983 but is a little more subtle the scalar field potential here is a much support thank could just be a simple problem potential that goes like em square dance where it is just a free field theory that's a possibility here and inflation takes place while the CEO field is high on a hill willing downward and what then they realized is that starts at high enough on the Hill you have a long enough period where the energy is dominated by the potential energy for inflation happen then when they got here which the bottom of the hill inflation yes OK that's an interesting question they and the different possible answers the original answer the 1 that was discussed in papers about new inflation assumed that the universe was in thermal equilibrium at very very high temperatures that we no longer necessarily feel comfortable assuming there was the assumption that and even of the potential energy function looks like this at very high temperatures this could still be ephemeral equilibrium point the miniseries of theirs the laughter but once it's cold so that there no longer thermal effects then yes is terrible to roll of the hell and was
simply has to raise the parameters of that that takes a long time by early universe standards and that haven't models were constructed and to get to the top of the hill that comes about by thermal equilibrium processes at higher temperatures finite temperature effective potential which is what coverage at finite temperatures can still just have a single man with the center even when the potential energy looks like this I now in there are other contexts I think it is and now it is most of us would be unwilling to assume that the universe started out from equilibrium and calculations show that it's not start out in the equilibrium it will not reach the McQuivey fast enough to make this work so 0 no I think the common way of assessing how this could still happen In the modern context is to just imagine it could happen random as if the Schofield had a complicated distribution in space Due to some random starting point we don't know determining in a submission to the universal just make things up we can make up essentially random distribution for the scalar field and all the places where the scalar field will be on top of the hill and those places can play 1 place Del and ultimately the places that plate will dominate that's not the way it can happen that's right it has to be homogeneous or approximately the scale of the horizon that time approximately inverse Hubble expansion well I think the real answer is nobody quite knows because nobody quite knows what random meetings but if you believe that the natural scale is the scale and I will is the only scale that's there then gobble scale becomes a natural correlation and it doesn't strike me as being so improbable that have a region of publicized that approximate homogeneous evidence crucially on here assumptions which we don't have to justify so I think you could easily convince yourself way and so we know people of commits himself both ways that act have thank you all 50 commits itself of registered question the other questions will get in my case going on but discussion of the sequence of events the scenario association proposes that at least a patch of this negative pressure and material existed in the early universe and if we had inflation at the end of the scale of grand unified theories which is isn't plausible but not necessary assumption on inflation could happen other scales as well of innovation happens at the end of the scale grand unified theories then the patch can be as small as 10 to the minus 28 centimeters which is kind of phenomenal that is the Hubble size that energy density publicizing the inverse of the Hubble expansion but now since any such patches fantastically large was inflation started the initial density of such patches of the probability that passions that happened can be extraordinary low the monsters to leaders workable because the places flight take over once they start so as long as the chanted starting and that's interest my way things enough to make the model was totally viable yes the use the to like of part of the deal with it after but you know what I mean is that the energy density is about equal to the 4th power that energy units were it's God's 0 1 still and so the agency goes like the 4th power of of an energy that's because 11 is the same as adverse energy despite its power yeah Texas age moreover P and so on so 92 the 4th power is the same as energy provider and that's waiting community of Europe attendance 16 year energy density the order of 10 the 16th unique to the 4th power get so if 1 assumes that such pact exists what is woven soon and then the gravitational pull propulsion created by the negative pressure becomes the driving force behind the big bang in that patch of space at the bank becomes a local feature of global feature the patches driven and exponential expansion and for grand unified theories numbers b exponential expansion time constant is about 10 to the minus 38 seconds answer every 10 to minus 38 seconds the little patch grows by a factor of Willie 2 . 7 it also think of is doubling since wrong or a magnitude things but so the patch has to expand exponentially by factor released 10 to the 28 to become big enough to create a observed universe which means it has to be the order of 1 centimeter at the end of the started at 10 to the minus 28 centimeters and requires a 65 time constants in his work at the logarithm and it's also about as 100 doubling times between the contends of government contracts than time constants and if 1 has that much inflation which would produce an entire universe from this initial tend minus 28 centimeter patch and few have more inflation is probably OK you don't have to fine-tune anything here I was just a minimum amount of inflation needed that created the universe no inflation ultimately ends because the scalar field eventually rolled down the hill In these 2
models in this model the scale undergo some kind of fluctuation and all down the hill is modeled on downhill to begin with so much does roll down the hill and you come to a state which is no longer dominated by the potential energy of the scalar field and then the gravitational repulsion turns off and inflation turns off and at that point the energy that within scalar field gets released and gets released 2 other particles this particle colliding with each other and they hopefully rather quickly produce a I have seen the hot soup of ordinary particles which was exactly the starting point of the conventional Big Bang theory so it is with the people ends and the main feature begins that is the conventional Big Bang Theory begins built out of the particles created by the energy of the scale of field that had dominated universe during inflation the standard ,comma knowledge then begins they might just point out here and somebody my size handle them at the bottom of that there's a qualification associated with this statement the scalar field actually varies in space and what happens is In a capable placed inflation 1 and in a certain amount of time but those the other places where inflation might be continuing and that's what ultimately gives rise to this phenomena of eternal inflation which are becoming back to so eternal inflation happens because because this last statement is a little bit oversimplified many questions you hear different yes but if you just look at the scaffold at 1 point in space you'll eventually see it will to the bottom of the hill and inflation land at that particular point in space this year I think of every point in space but will happen at different times at different points in space I'm so that a given time the picture is a little more complicated than the Stetsons makes it sound professional and in some places below be continuing in other places and the phenomenon of eternal inflation which will discuss the issue says that fact for many models that inflation is always continuing someplace I never completely hands and will assess how that happens exactly a little later you we will have always have this a good question has the
usual assumption that underlies the initial conditions here :colon assumption we don't really have a theory of initial conditions of the universe so we really just make the prophecies that sound plausible and a plausible hypothesis that's attached to this picture is that the still feel start that some random configuration have a start and surrendered invigoration you argue that there be some places with the scale sometime and held and will be those places that will undergo the inflation and that's the origin of the word chaotic here actually How can 1st to the initial conditions that seem appropriate to this potential energy function while the summarily period of the initial additions here with 1 of his being thermal although it can also be Katich sir students which which that's right the inflation the delegate to be just 1 inflationary patch in fact looks much more plausible that there would be some number of inflationary patches and we will do that and it's 1 of the course but there could very easily be others and talk later about the multiverse American it's very possible that there are many others maybe even in a number of others Oh yeah ,comma but now important feature that makes all this work really it added his region is inflating if the emergency went down by the fantastic factor by which the volume increases than they really nothing there by the end inflation would not work do but the fact is that a fantastic amount of expansion is going on expansion by at least a factor of 10 to the 28 linearly and that means the volume close with the queue allowances and 74 or something like that the program that affect something like that of Nadia so it's crucially important that the agency does not decrease by that factor is that it does not have a lot of this expansion is going on the Internet users secure fuel was in fact not lower at all the and that seems to violate conservation of energy this is how much more energy the Schofield at the end and we had at the beginning and the the claim is that even know you have vastly more mass energy in a stellar field at the end you have the beginning is still all consistent with energy conservation and this is where we need another miracle physics I told you earlier than I do inflation is resting on 2 miracles of physics has of the 2nd miracle elects on is somewhat surprising but actually obvious fact that the energy of a gravitational field is in fact negative sale what is going on the union while expansion taking place it is committee be related in some the to this picture here for the custom of the test the energy of skeletal was constant as the volume expanded with the energy came from my point out on the distance and the question is in the universe What is the analog of the mechanism that pulling out of imparting ejection energy and the answers as gravity and that gravity can you that precisely because unity of gravitational field is negative so if we look at the overall energy balance Of the total energy is approximately 0 and stay there that is the problem and use your field is compensated by the negative energy of gravity to the turbidity universe is constant and may very well be exactly 0 because many case incredibly small it's whenever started with this tiny patch the scientists schematic pictured as saying the landing on positive energy that's in the black plus a lot of units in the red and up to something which is if 0 River close to 0 know you might be surprised by my I tell you that the energy Oh gravitational field is negative slide that
established this kind of correlation
inflation-adjusted structures that region up to the times of the late last nite encompasses everything we see
observation universal produces a universe of homogeneous which is what's needed the sense it was monitor
1998 it was discovered that the universe today is in fact accelerating
Atomphysiker
Gesteinsabbau
Astrophysik
Summer
Magnetisches Dipolmoment
Januar
Weltall
Bahnelement
Isotop
Kosmische Hintergrundstrahlung
Zentralstern
Familie <Elementarteilchenphysik>
Kaltumformen
Elektronisches Bauelement
Licht
Stoff <Textilien>
Unwucht
Standardzelle
Standardzelle
Feldnebel
Übungsmunition
Formationsflug
Angeregtes Atom
Sonnensystem
Himmel
Jahr
Sichtverbindung
Restkern
Gasdichte
Sternsystem
Irrlicht
Teilchen
Schiffsrumpf
Atomistik
Forschungssatellit
Empfangsantenne
Speckle-Interferometrie
Vakuumphysik
Kernphysik
Clusterphysik
Morgen
Teilchen
Gasdichte
Relativistische Mechanik
Münztechnik
Urknall
Weltall
Gas
Sternsystem
Druckkraft
Gleitsichtglas
Gleichstrom
Modellbauer
Material
Wasserstoffatom
Zentralstern
Drehen
Summer
Konfektionsgröße
Weltall
Maßstab <Messtechnik>
Prozessleittechnik
Fahrgeschwindigkeit
Druck
Kaltumformen
Längenmessung
Standardzelle
Standardzelle
Übungsmunition
Monitorüberwachung
Magnetische Kraft
Angeregtes Atom
Konfektionsgröße
Druckfeld
Jahr
Vakuumphysik
Luftstrom
Drosselklappe
Synthesizer
Gasdichte
Sternsystem
Schiffsantrieb
Maßstab <Messtechnik>
Besprechung/Interview
Erdefunkstelle
Schnittmuster
Teilchen
Hubble-Konstante
Umlaufzeit
Unterdruck
Relativistische Mechanik
Elementarteilchenphysik
Klangeffekt
Gasdichte
Zerfallsprodukt
Basis <Elektrotechnik>
Gegenkopplung
Gruppenlaufzeit
Urknall
Tag
Weltall
Maxwellsche Theorie
Niederspannungsnetz
Gas
Druckkraft
Schiffsklassifikation
Negativer Widerstand
Zeitdiskretes Signal
Gleichstrom
Modellbauer
Luftdruck
Masse <Physik>
Holzfaserplatte
Gasdichte
Gesteinsabbau
Hochsetzsteller
Optischer Resonator
Bergmann
Maßstab <Messtechnik>
Zugmaschine
Siebdruck
Fahrzeug
Rutsche
Weltall
Postkutsche
Cocktailparty-Effekt
Koaxialkabel
Satz <Drucktechnik>
Uhrwerk
Unterdruck
DVD-Player
Maßstab <Messtechnik>
Kolben
Relativistische Mechanik
Gasturbine
Fahrgeschwindigkeit
Druck
Negativ <Photographie>
Flugbahn
Gasdichte
Relativistische Mechanik
Gegenkopplung
Beschleunigung
Energieeinsparung
Weltall
Gas
Druckkraft
Übungsmunition
Angeregtes Atom
Laser-Doppler-Anemometrie
Konfektionsgröße
Druckfeld
Vakuumphysik
Jahr
Buntheit
Direkte Messung
Masse <Physik>
Drosselklappe
Thermalisierung
Kugelblitz
Erwärmung <Meteorologie>
Konfektionsgröße
Spannungsabhängigkeit
Weltall
Patch-Antenne
Leistungssteuerung
Schwache Lokalisation
Computeranimation
Maßstab <Messtechnik>
Biegen
Fahrgeschwindigkeit
Druck
Negativ <Photographie>
Fernsehempfänger
Kugelstrahlen
Kaltumformen
Spannungsabhängigkeit
Zeitkonstante
Standardzelle
Standardzelle
Übungsmunition
Magnetische Kraft
Angeregtes Atom
Elementarteilchenphysik
Gastrokamera
Plattieren
Atmosphäre
Flüssiger Brennstoff
Druckfeld
Vakuumphysik
Jahr
Drosselklappe
Temperatur
Fliegen
Schiffsantrieb
Direkte Messung
Maßstab <Messtechnik>
Thermik
Bildqualität
Hubble-Konstante
Angeregtes Atom
Umlaufzeit
Unterdruck
Walzmaschine
Patch-Antenne
Kontraktion
Vakuumphysik
Klangeffekt
Teilchen
Gasdichte
Kraft-Wärme-Kopplung
Gegenkopplung
Urknall
Weltall
Maxwellsche Theorie
Niederspannungsnetz
Druckkraft
Thermalisierung
Schlagwerk
Scheinbare Helligkeit
Modellbauer
Ersatzteil
Material
Initiator <Steuerungstechnik>
Dissoziation
Papier
Thermalisierung
Maßstab <Messtechnik>
Konfektionsgröße
Thermik
Weltall
Störgröße
Patch-Antenne
Computeranimation
Teilchen
Walzgerüst
Maßstab <Messtechnik>
Biegen
Druck
Vakuumphysik
Tagesanbruch
Teilchen
Gegenkopplung
Urknall
Standardzelle
Weltall
Standardzelle
Angeregtes Atom
Jahr
Modellbauer
Quantenfluktuation
Stoff <Textilien>
Gesteinsabbau
Mechanikerin
Konfektionsgröße
Rutsche
Fehlprägung
Weltall
Leistungssteuerung
Leitungstheorie
Erdölgewinnung
Prozessleittechnik
Schwächung
Druck
Negativ <Photographie>
Familie <Elementarteilchenphysik>
Kaltumformen
Seil
Längenmessung
Spannungsabhängigkeit
Unwucht
Standardzelle
Elektronenschale
Übungsmunition
Angeregtes Atom
Hohlwelttheorie
Römischer Kalender
Flüssiger Brennstoff
A6M Zero-Sen
Jahr
Vakuumphysik
Reihenschlussmaschine
Ringgeflecht
Elektrostatik
Direkte Messung
Videotechnik
Analogsignal
Gewicht
Direkte Messung
Masse <Physik>
Mechanik
Festkörper
Maßstab <Messtechnik>
Diamant <Rakete>
Feldeffekttransistor
Teilchen
Angeregtes Atom
Schleudersitz
Umlaufzeit
Bewegungsmessung
Kopfstütze
Elementarteilchenphysik
Patch-Antenne
Strahlung
Vakuumphysik
Tagesanbruch
Klangeffekt
Gasdichte
Coulomb-Wechselwirkung
Nyquist-Kriterium
Gegenkopplung
Koerzitivfeldstärke
Energieeinsparung
Glasherstellung
Weltall
Erdölgewinnung
Maxwellsche Theorie
Flasche
Ausschuss <Technik>
Thermalisierung
Atomhülle
Schwarzes Loch
Gleichstrom
Förderleistung
Atomhülle
Ersatzteil
Kryptonlampe
Lithium-Ionen-Akkumulator
Masse <Physik>
Greiffinger
Drehen
Magnetisches Dipolmoment
Temperatur
Parallelschaltung
Lichtgeschwindigkeit
Photonik
Weltall
Kosmische Hintergrundstrahlung
Computeranimation
Maßstab <Messtechnik>
Prozessleittechnik
Schwingungsphase
Kosmische Hintergrundstrahlung
Neutronenaktivierung
Abwrackwerft
Wrack
Kaltumformen
Lichtstreuung
Rollsteig
Längenmessung
Licht
Plasma
Standardzelle
Pick-Up <Kraftfahrzeug>
Angeregtes Atom
Jahr
Feldquant
Planet
Temperatur
Fliegen
Wärmequelle
Sternsystem
Stringtheorie
Maßstab <Messtechnik>
Festkörper
Besprechung/Interview
Drahtgebundene Übertragung
Umlaufzeit
Gasverteilung
Speckle-Interferometrie
Gasdichte
Waffentechnik
Urknall
Mechanismus <Maschinendynamik>
Weltall
Gas
Elektronik
Strahlung
Gleichstrom
Modellbauer
Ersatzteil
Material
Zentralstern
Papier
Erder
Messung
Drehen
Parallelschaltung
Temperatur
Leisten
Weltall
Forschungssatellit
Nacht
Computeranimation
Astronom
Maßstab <Messtechnik>
Rungenwagen
Lötlampe
Montag
Fahrgeschwindigkeit
Kristallgitter
Kosmische Hintergrundstrahlung
Randspannung
Großkampfschiff
Kaltumformen
Standardzelle
Monitorüberwachung
Übungsmunition
Jahreszeit
Jahr
Intensitätsverteilung
Rungenwagen
Bleistift
Maßstab <Messtechnik>
Bildqualität
Forschungssatellit
Relativistische Mechanik
Unwucht
Herbst
Kotflügel
Plancksches Strahlungsgesetz
Verpackung
Relativistische Mechanik
Gruppenlaufzeit
Metallschicht
Eisenbahnbetrieb
Urknall
Weltall
Mechanismus <Maschinendynamik>
Rauschzahl
Sternsystem
Thermalisierung
Dorn <Technik>
Strahlung
Gleichstrom
Ersatzteil
Initiator <Steuerungstechnik>
Masse <Physik>
Juli
Schaft <Waffe>
Magnetisches Dipolmoment
Photonik
Geokorona
Störgröße
Satz <Drucktechnik>
Minute
Halbwertszeit
Kosmische Hintergrundstrahlung
Leitungstheorie
Breitbandübertragung
Gießen <Urformen>
Rungenwagen
Kugelstrahlen
Längenmessung
Angeregtes Atom
Elementarteilchenphysik
Wechselstromgenerator
Motor
Intensitätsverteilung
Luftstrom
Quantenfluktuation
Analogsignal
Drosselklappe
Schreibware
Gewicht
Schwerewelle
Sternsystem
Mechanik
Wetter
Begrenzerschaltung
Hubble-Konstante
Digitalschaltung
Dezember
Zylinderblock
Kopfstütze
Edelsteinschliff
Plancksches Strahlungsgesetz
Bahnelement
Stunde
Relativistische Mechanik
Gasdichte
Tag
Weltall
Rauschzahl
Negativer Widerstand
Gleichstrom
Ersatzteil
Unterwasserfahrzeug
Erder
Potenzialausgleich
Intervall
Konfektionsgröße
Rutsche
Luftaustausch
Weltall
Woche
Passung
Astronom
Bildfrequenz
Monat
Negativ <Photographie>
Array
Kaltumformen
Spektralbande
Paarerzeugung
Zeitkonstante
Fraktionierter Quanten-Hall-Effekt
Plasma
Formationsflug
Atmosphäre
Elektromagnetische Welle
Öffentliches Verkehrsmittel
Kampfflugzeug
Supernova
Anstellwinkel
Temperatur
Synthesizer
Virtuelles Photon
Verbunddampfmaschine
Pulvermetallurgie
Quecksilberschalter
Emissionsvermögen
Klangeffekt
Glättung <Elektrotechnik>
Tonnenleger
Kraft-Wärme-Kopplung
AM-Herculis-Stern
Elektronik
Band <Textilien>
Phase <Thermodynamik>
Nassdampfturbine
Grundfrequenz
Strahlung
Scheinbare Helligkeit
Modellbauer
Rucksack
Dipol <Nachrichtentechnik>
Greiffinger
Messung
Großkraftwerk
Mechanikerin
Pulsar
Spannungsabhängigkeit
Isolator <Luftstrahltriebwerk>
Staubmessung
Impulsübertragung
Leistungssteuerung
Computeranimation
MAC
DVD-Player
Mehrfachstern
Prozessleittechnik
Uran-238
Passfeder
Amplitude
Steckkarte
Personenzuglokomotive
Tuner
Standardzelle
Messgerät
Übungsmunition
Stapellauf
Januar
Jahr
Senderöhre
Walken <Textilveredelung>
Höhentief
Maßstab <Messtechnik>
Stringtheorie
Schnittmuster
Umlaufzeit
Unterdruck
Fertigpackung
Speckle-Interferometrie
Schreibschrank
Absoluter Nullpunkt
Tunneldiode
Nutzfahrzeug
Mechanismus <Maschinendynamik>
Bug
Stellarator
Material
Initiator <Steuerungstechnik>
Parvan
Leisten
Energieniveau
Optisches Spektrum
Forschungssatellit
Spannungsrauschen
Regelstrecke
Proof <Graphische Technik>
Randspannung
Multiplizität
Wellenlänge
Blasenkammer
Pager
Rutschung
Elektronische Medien
Handy
Himmel
Feldquant
Vakuumphysik
Klassische Elektronentheorie
Antennendiversity
Gleitlager
Tonfrequenz
Wellenlänge
Tiefgang
Chirp
Steckkarte
Teilchen
Forschungssatellit
Spiel <Technik>
Lungenautomat
Rundstahlkette
Dunkle Materie
Windrose
Mark <Maßeinheit>
Gruppenlaufzeit
Eisenbahnbetrieb
Proof <Graphische Technik>
Maxwellsche Theorie
Mitlauffilter
Kurzschlussstrom
Gummifeder
Mikrowelle
Papier