34719 Intermediate Trivia Questions
34719 public questions at this depth. How many can you answer?
Which Doppler ultrasound mode displays velocity information as a graph over time?
Answer
Spectral Doppler
What is the change in wavelength of light due to gravity, analogous to a Doppler shift, called?
Answer
Gravitational redshift
Which kind of binary star is detected by periodic Doppler shifts in its spectral lines?
Answer
Spectroscopic binary
In spectroscopy, Doppler shifts are seen as shifts in what features?
Answer
spectral lines
Which type of Doppler radar sends a steady signal instead of pulses?
Answer
continuous-wave radar
What instrument uses Doppler shifts to measure a vessel's speed through water?
Answer
Doppler velocity log
Which ultrasound mode maps Doppler frequency shifts as colors?
Answer
color Doppler
Which dimensionless number is source speed divided by local sound speed?
Answer
Mach number
What does the C mean in CW Doppler radar?
Answer
continuous
What name is given to velocity along an observer's line of sight?
Answer
radial velocity
What radar type combines pulse timing with Doppler frequency shifts?
Answer
pulse-Doppler radar
A Doppler shift at right angles to the line of sight is called what?
Answer
transverse Doppler effect
Which named factor, symbolized by gamma, appears in relativistic Doppler formulas?
Answer
Lorentz factor
Doppler's 1842 paper discussed the colored light of which kind of stars?
Answer
binary stars
The word “sushi” comes from an archaic Japanese term meaning what taste?
Answer
Sour-tasting
A typical hosomaki sushi roll has about what diameter?
Answer
2.5 cm
What tofu product forms the pouch in inarizushi?
Answer
Abura-age
What wrapping replaces nori in chakin-zushi?
Answer
Omelette
What fish is called tai in Japanese sushi?
Answer
Sea bream
What fish is known as hamachi in Japanese sushi menus?
Answer
Japanese amberjack
In which Tokyo district is Sukiyabashi Jiro located?
Answer
Ginza
Which scientist received the 1908 Nobel Prize in Chemistry for work on radioactive substances?
Answer
Ernest Rutherford
Who announced the discovery of actinium in 1899 from pitchblende residues?
Answer
André-Louis Debierne
What term means one element changing into another during radioactive decay?
Answer
transmutation
Which English radiochemist explained radioactive transmutation with Ernest Rutherford?
Answer
Frederick Soddy
Thoron was later identified as which radon isotope?
Answer
radon-220
What radium compound was first isolated in a pure state?
Answer
radium chloride