typos fixed thanks to Ashley

1 files changed, 4 insertions, 4 deletions

diff --git a/single-photon-interference.tex b/single-photon-interference.tex
index 31c3310..1ec5664 100644
--- a/single-photon-interference.tex
+++ b/single-photon-interference.tex
@@ -77,7 +77,7 @@ the rotary scale is $0.01$~mm.
 \item Two distinct light detectors at the right-hand end of the apparatus: a \emph{photodiode}
 and a \emph{photomultiplier tube} (PMT for short). The photodiode is used with the much brighter laser light;
 it's mounted on light shutter in such a way that it's in position to use when the shutter is closed (pushed
-down). The photomultiplier tube is extremely sensitive detector able to detect individual photons (with energy
+down). The photomultiplier tube is an extremely sensitive detector able to detect individual photons (with energy
 of the order of $10^{-19}$~J, and it is used with the much dimmer light-bulb source. Too much light can easily
 damage it, so \textbf{PMT is safe to use only when the cover of the apparatus is in place, and only when the
 light bulb is in use}. It is exposed to light only when the shutter is in its up position.
@@ -138,7 +138,7 @@ maximum, $a$ is the width of the slit, and $\ell$ is the distance between the sl
 forget to measure and record this distance in the lab journal!})
 
 In your apparatus move the slit blocker to let the light go through only one slit and inspect the
-light pattern in the viewing screen. Does it looks like the intensity distribution you expect from
+light pattern in the viewing screen. Does it look like the intensity distribution you expect from
 the wave theory? Take a minute to discuss how this picture would change if the slit was much wider or
 much narrower.
 
@@ -188,7 +188,7 @@ the apparatus is out of alignment, and insufficient light is reaching the detect
 \textbf{Initial tests of wave theory of light:} If we assume that the light beam is a stream of particle, we
 would naively expect that closing one of two identical slits should reduce the measured intensity of light at
 any point on the screen by half, while the wave theory predicts much more dramatic variations in the different
-points in the screen. Which theory provide more accurate description of what you see?
+points in the screen. Which theory provides a more accurate description of what you see?
 
 \begin{itemize}
 \item Find the highest of the maxima -- this is the ``central fringe'' or the ``zeroth-order fringe'' which theory
@@ -198,7 +198,7 @@ to pass through only one of the slits, and measure the change in the photodiode
 \item To see another and even more dramatic manifestation of the wave nature of light, set the slit blocker again
 to permit light from both slits to pass along the apparatus, and now place the detector slit at either of the
 minima immediately adjacent to the central maximum; take some care to find the very bottom of this minimum.
-Record what happens when you use the slit-blocker to block the light from one, or the other, of the two slits?
+Record what happens when you use the slit-blocker to block the light from one, or the other, of the two slits.
 
 \item Check your experimental results against the theoretical predictions using Eqs.~(\ref{1slit}) and (\ref{2slit_wDif}).
 Do your observation confirm or contradict wave theory?