Edited by Odorskeut, 12 July 2006 - 01:08 PM.
Science quiz
Started by
Guest_Mirai Naza
, Jun 04 2006 09:42 PM
981 replies to this topic
#126
Kiririn-shi
-
- Dragon's Elite
-
- 7,352 posts
Hanyaa~
Reputation: 2
Neutral
Posted 12 July 2006 - 01:02 PM
Well, I think cynodonts is a good answer too. Actually, I was waiting for lytrosaurus but cynodonts and lytrosaurus are both subgroups of therapsids group. Here is a picture:http://freefilehosti...id=rdn1kq3e9w==15. What does LASER stand for? (1 point)Score Board:Odorskeut- 17Amnesiac-12sum41rocksandrolls-10DVS_2006-8Eärendil- 8aschen-6Monomer-60 vert 0-6Mirai Naza- 5Escaler-3Pompous Pom-poms-3Simbird-3Kewne-2random dude-2simbot15-2lumba-1
#127
Guest_ネバリk
Guest_ネバリk
-
- Guest
Posted 12 July 2006 - 01:08 PM
Light Amplification by Stimulated Emission of Radiation
Edited by ネバリk, 12 July 2006 - 01:09 PM.
#128
Kiririn-shi
-
- Dragon's Elite
-
- 7,352 posts
Hanyaa~
Reputation: 2
Neutral
Posted 12 July 2006 - 01:10 PM
Correct. More difficult in the LASER subject.16. List three crystals that can be used to generate LASER? (3 points)Score Board:Odorskeut- 17Amnesiac-12sum41rocksandrolls-10DVS_2006-8Eärendil- 8aschen-7Monomer-60 vert 0-6Mirai Naza- 5Escaler-3Pompous Pom-poms-3Simbird-3Kewne-2random dude-2simbot15-2lumba-1
#129
Guest_ネバリk
Guest_ネバリk
-
- Guest
Posted 12 July 2006 - 01:14 PM
-Ruby crystal-Ytterbium crystal-and Sapphirethere are a heap more based on these types of crystals, but theres 3
#130
Kiririn-shi
-
- Dragon's Elite
-
- 7,352 posts
Hanyaa~
Reputation: 2
Neutral
Posted 12 July 2006 - 01:19 PM
Actually, Ytterbium is not really a crystal but used to dope crystal, for example Ytterbium-doped YAG.17. What is the lightest rare gas? (1 point)Score Board:Odorskeut- 17Amnesiac-12aschen-10sum41rocksandrolls-10DVS_2006-8Eärendil- 8Monomer-60 vert 0-6Mirai Naza- 5Escaler-3Pompous Pom-poms-3Simbird-3Kewne-2random dude-2simbot15-2lumba-1
#131
Guest_0 vert 0
Guest_0 vert 0
-
- Guest
Posted 12 July 2006 - 01:35 PM
I'm not sure, but is it Xenon?
#132
Kiririn-shi
-
- Dragon's Elite
-
- 7,352 posts
Hanyaa~
Reputation: 2
Neutral
Posted 12 July 2006 - 01:47 PM
Nope, Xenon is a rather heavy element, rare gas though.
#133
Guest_A Love Supreme
Guest_A Love Supreme
-
- Guest
Posted 12 July 2006 - 02:37 PM
The lightest rare gas is helium
#134
Kiririn-shi
-
- Dragon's Elite
-
- 7,352 posts
Hanyaa~
Reputation: 2
Neutral
Posted 12 July 2006 - 02:40 PM
Good answer.18. What is the range of visible light spectrum? (2 points)Score Board:Odorskeut- 17Amnesiac-12aschen-10sum41rocksandrolls-10DVS_2006-8Eärendil- 8Monomer-60 vert 0-6Mirai Naza- 5Pompous Pom-poms-4Escaler-3Simbird-3Kewne-2random dude-2simbot15-2lumba-1
#135
Guest_A Love Supreme
Guest_A Love Supreme
-
- Guest
Posted 12 July 2006 - 02:43 PM
The range of the visble light spectrum is about 700nm (nanometers) to to 400nm.
#136
Kiririn-shi
-
- Dragon's Elite
-
- 7,352 posts
Hanyaa~
Reputation: 2
Neutral
Posted 12 July 2006 - 02:48 PM
Well, the red is more close to 800nm than to 700nm but 700 is good enough for me.19. What is called 'supercontinuum'? (3 points)Score Board:Odorskeut- 17Amnesiac-12aschen-10sum41rocksandrolls-10DVS_2006-8Eärendil- 80 vert 0-6Monomer-6Pompous Pom-poms-6Mirai Naza- 5Escaler-3Simbird-3Kewne-2random dude-2simbot15-2lumba-1
Edited by Odorskeut, 12 July 2006 - 03:16 PM.
#137
Guest_0 vert 0
Guest_0 vert 0
-
- Guest
Posted 12 July 2006 - 03:08 PM
A plethora of nonlinear effect leading to considerable spectral broadening of optical pulses and thereby potentially octave-spanning output. 
WOW
WOW
#138
Kiririn-shi
-
- Dragon's Elite
-
- 7,352 posts
Hanyaa~
Reputation: 2
Neutral
Posted 12 July 2006 - 03:15 PM
Well, google is very handy, isn't it 20. In mathematics, what is the "inverse" operation of integrating? (2 points)Score Board:Odorskeut- 17Amnesiac-12aschen-10sum41rocksandrolls-100 vert 0-9DVS_2006-8Eärendil- 8Monomer-6Pompous Pom-poms-6Mirai Naza- 5Escaler-3Simbird-3Kewne-2random dude-2simbot15-2lumba-1
20. In mathematics, what is the "inverse" operation of integrating? (2 points)Score Board:Odorskeut- 17Amnesiac-12aschen-10sum41rocksandrolls-100 vert 0-9DVS_2006-8Eärendil- 8Monomer-6Pompous Pom-poms-6Mirai Naza- 5Escaler-3Simbird-3Kewne-2random dude-2simbot15-2lumba-1
#139
Guest_A Love Supreme
Guest_A Love Supreme
-
- Guest
Posted 12 July 2006 - 04:37 PM
differentiation is the name for the inverse operation of integrating
#140
Kiririn-shi
-
- Dragon's Elite
-
- 7,352 posts
Hanyaa~
Reputation: 2
Neutral
Posted 12 July 2006 - 06:18 PM
Since this is not a really rigorous question, differentiation or derivation are both accepted answers.21. Is simultaneity a relative or absolute concept? (1 point)Score Board:Odorskeut- 17Amnesiac-12aschen-10sum41rocksandrolls-100 vert 0-9DVS_2006-8Eärendil- 8Pompous Pom-poms-8Monomer-6Mirai Naza- 5Escaler-3Simbird-3Kewne-2random dude-2simbot15-2lumba-1
#141
Guest_Vibronater
Guest_Vibronater
-
- Guest
Posted 12 July 2006 - 06:30 PM
Simultaneity is a relative Einstein discovered this.
#142
Kiririn-shi
-
- Dragon's Elite
-
- 7,352 posts
Hanyaa~
Reputation: 2
Neutral
Posted 12 July 2006 - 06:36 PM
Exactly since simultaneity is closely related to the speed of light and since light speed is not infinite, the perception of a phenomenon depends of the distance that separates the observator from te object. So two events are simultaneous only if the information (light) come to the observator at the same time. For these two same events, in general, the information don't arrive at the same time for another observator that is on a different spot so that simultaneity is relative to the observator.22. What is the relation between light speed ( c ), wavelength ( l ) and frequency ( f )? (2 points)Score Board:Odorskeut- 17Amnesiac-12sum41rocksandrolls-11aschen-100 vert 0-9DVS_2006-8Eärendil- 8Pompous Pom-poms-8Monomer-6Mirai Naza- 5Escaler-3Simbird-3Kewne-2random dude-2simbot15-2lumba-1
Edited by Odorskeut, 12 July 2006 - 06:38 PM.
#143
Guest_Vibronater
Guest_Vibronater
-
- Guest
Posted 12 July 2006 - 06:44 PM
If I know what your asking I know this one f=c/l.
#144
Kiririn-shi
-
- Dragon's Elite
-
- 7,352 posts
Hanyaa~
Reputation: 2
Neutral
Posted 12 July 2006 - 06:47 PM
Still correct.23. What is the Schwazschild radius? (2 points)Score Board:Odorskeut- 17sum41rocksandrolls-13Amnesiac-12aschen-100 vert 0-9DVS_2006-8Eärendil- 8Pompous Pom-poms-8Monomer-6Mirai Naza- 5Escaler-3Simbird-3Kewne-2random dude-2simbot15-2lumba-1
#145
Guest_Vibronater
Guest_Vibronater
-
- Guest
Posted 12 July 2006 - 06:56 PM
The distance from the center of an object if all the mass compressed within that region, the escape velocity would equal the speed of light. Once a stellar remnant collapses within this radius, light cannot escape and the object is no longer visible.Liking the light questions!
#146
Kiririn-shi
-
- Dragon's Elite
-
- 7,352 posts
Hanyaa~
Reputation: 2
Neutral
Posted 12 July 2006 - 07:03 PM
Correct.
There are some specific issues with rotating and static black holes though.24. What is approximately the surface temperature of the sun (in Kelvin)? (1 point)Score Board:Odorskeut- 17sum41rocksandrolls-13Amnesiac-12aschen-100 vert 0-9DVS_2006-8Eärendil- 8Pompous Pom-poms-8Monomer-6Mirai Naza- 5Escaler-3Simbird-3Kewne-2random dude-2simbot15-2lumba-1light cannot escape
#147
Guest_Vibronater
Guest_Vibronater
-
- Guest
Posted 12 July 2006 - 07:09 PM
The sun's surface is approximately 5800 Degrees Kelvin.EDIT:I hit the 0 too many times it's 5880 Degrees Kelvin.Sorry.
Edited by sum41rocksandrolls, 12 July 2006 - 07:10 PM.
#148
Kiririn-shi
-
- Dragon's Elite
-
- 7,352 posts
Hanyaa~
Reputation: 2
Neutral
Posted 12 July 2006 - 07:11 PM
Still correct.25. What are the seven international system units and what do they measure? (3 points)Score Board:Odorskeut- 17sum41rocksandrolls-14Amnesiac-12aschen-100 vert 0-9DVS_2006-8Eärendil- 8Pompous Pom-poms-8Monomer-6Mirai Naza- 5Escaler-3Simbird-3Kewne-2random dude-2simbot15-2lumba-1
#149
Guest_Vibronater
Guest_Vibronater
-
- Guest
Posted 12 July 2006 - 07:42 PM
They 7 SI Units are:Metre-lengthKilogram-massSecond-timeAmpere-electric currentKelvin-temperatureMole-amount of substanceCandela-luminous intensity
#150
Guest_FLAME FIERCE
Guest_FLAME FIERCE
-
- Guest
Posted 12 July 2006 - 07:45 PM
WELL FIST BIS ZOR BOK
