Sooooo, wavelengths (λ) become longer when something moves away (redshift) and become shorter when something moves towards you (blueshift).
For a red flag (λ0=610nm) to become a green flag (λ1=549nm), it has to move towards you quite fast. But how fast is 'quite fast'?
Using the formula
flag_velocity / speed of light (c) = difference in wavelengths / starting wavelength
we get
flag_velocity = (610-549) / 610 * c = 61 / 610 * c = 1/10 * c
This means: the flag has to move with about c/10 = 30 000 000 m/s = 108 000 000 km/h = 67 108 100 mph. Yeah, that's quite fast.
(Disclaimer:
use info on own risk
values for λ were chosen in a way to make calculations easy. There is no info on what shade of red or green the flag is. The final result will be about the same.
With speeds at around 10% of c, I should use the formula considering the relativistic doppler effect... However, i wont. Thanks.)
Red flag: My friend once saw what looked like people setting a RadioShack ablaze and stealing all the expensive electronics and making off with them all.
Green flag context: It was actually a faulty electronic that caused the fire, and the "thieves" were Good Samaritans saving everything from getting burned.
If your partner is indiscriminately murdering vaguely shady people with a bow and arrow it will probably be fine, cause he’ll reset the universe and become god (or something?) just be sure to weep about being betrayed at least once every seas—er… year.
They're very giving, and will do you so many favors, and cater to your whims. Favorite ice cream? Let me go buy it for you! Need something from the store? I'll go get it! Need a ride? Got you covered!
Once they have you "locked down" (married, pregnant, in a long-term lease, dependant on them for transport, etc.) they can do a 180 and suddenly "you owe them". No more favors. Only guilt. They'll isolate you and make every negative emotion they feel be "your fault."
They want you to become dependant on them so they can use and manipulate you.
Be so very careful with overly kind/giving people. Never let yourself be 100% dependant on someone else. Ever. No matter how nice they are to you.
The race was planned to run for 44 laps, but ended during the third lap due to wet conditions. Laps one and two took place behind the safety car before a red flag stopped the race on lap three. The sporting regulations required the results be taken from the end of lap one, with half points given to drivers who finished in the top 10 positions as less than 75% of the originally scheduled race distance had been completed.
Hating the democratic party of the United States. Without any other context you would assume they are a republican. But once they start critiquing marx and explaning how Trotsky's permanent revolution is the only viable path forward you know they are good people.
Alternatively, if someone supports the dems no matter what, that is a red flag that should never be overlooked especially when they start rationalizing their perverted beliefs by name-dropping minorities out of the blue.