- #1
Gogsey
- 153
- 0
Why don't we see interference of light from two light sources such as two candles? 2 reasons are required.
Thanks
Thanks
Light Interference: Why Don't We See 2 Sources? 2 Reasons
- Thread starter Gogsey
- Start date
AI Thread Summary
Light interference from two sources, such as candles, is not commonly observed due to specific conditions. The wavelength of the light plays a crucial role, as interference patterns require a certain relationship between the wavelengths of the sources. Additionally, the phase of the light waves must align appropriately for interference to occur. Without these conditions being met, the light from two sources does not produce noticeable interference patterns. Understanding these factors is essential to grasp why interference is not typically seen with everyday light sources.
- #2
VantagePoint72
- 820
- 34
I was all set to answer till you added "2 reasons are required"... it makes this sound suspiciously like a homework problem.
- #3
vincentchan
- 609
- 0
since this is a homework problem, i can't give you the answer..(you said 2 reasons are required) 
but i'll give you some hints lead to the answer
1. wavelength... in order for a interference exist... what is the restriction on the wavelength?
2. the phase of the light wave...
but i'll give you some hints lead to the answer1. wavelength... in order for a interference exist... what is the restriction on the wavelength?
2. the phase of the light wave...
Neglect gravity other than that of water; neglect friction.
F1=ρgsh=1000*10*1*(1+4)=50000 N;
F1=ρgsh=1000*10*0.1*4=4000 N;
F3=50000-4000=46000 N?
Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system
$$M(t) = M_{C} + m(t)$$
$$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$
$$P_i = Mv + u \, dm$$
$$P_f = (M + dm)(v + dv)$$
$$\Delta P = M \, dv + (v - u) \, dm$$
$$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$
$$F = u \frac{dm}{dt} = \rho A u^2$$
from conservation of momentum , the cannon recoils with the same force which it applies.
$$\quad \frac{dm}{dt}...
I was thinking using 2 purple mattress samples, and taping them together, I do want other ideas though, the main guidelines are;
Must have a volume LESS than 1600 cubic centimeters, and CAN'T exceed 25 cm in ANY direction.
Must be LESS than 1 kg.
NO parachutes.
NO glue or Tape can touch the egg.
MUST be able to take egg out in less than 1 minute.
Grade A large eggs will be used.
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