def construct(self):
europe = ImageMobject("Europe", use_cache = False)
self.add(europe)
self.freeze_background()
mathematicians = [
("Newton", [-1.75, -0.75, 0]),
("Jacob_Bernoulli",[-0.75, -1.75, 0]),
("Ehrenfried_von_Tschirnhaus",[0.5, -0.5, 0]),
("Gottfried_Wilhelm_von_Leibniz",[0.2, -1.75, 0]),
("Guillaume_de_L'Hopital", [-1.75, -1.25, 0]),
]
for name, point in mathematicians:
man = ImageMobject(name, invert = False)
if name == "Newton":
name = "Isaac_Newton"
name_mob = TextMobject(name.replace("_", " "))
name_mob.to_corner(UP+LEFT, buff=0.75)
self.add(name_mob)
man.scale_to_fit_height(4)
mobject = Point(man.get_corner(UP+LEFT))
self.play(Transform(mobject, man))
man.scale(0.2)
man.shift(point)
self.play(Transform(mobject, man))
self.remove(name_mob)
def construct(self):
europe = ImageMobject("Europe", use_cache = False)
self.add(europe)
self.freeze_background()
mathematicians = [
("Newton", [-1.75, -0.75, 0]),
("Jacob_Bernoulli",[-0.75, -1.75, 0]),
("Ehrenfried_von_Tschirnhaus",[0.5, -0.5, 0]),
("Gottfried_Wilhelm_von_Leibniz",[0.2, -1.75, 0]),
("Guillaume_de_L'Hopital", [-1.75, -1.25, 0]),
]
for name, point in mathematicians:
man = ImageMobject(name, invert = False)
if name == "Newton":
name = "Isaac_Newton"
name_mob = TextMobject(name.replace("_", " "))
name_mob.to_corner(UP+LEFT, buff=0.75)
self.add(name_mob)
man.scale_to_fit_height(4)
mobject = Point(man.get_corner(UP+LEFT))
self.play(Transform(mobject, man))
man.scale(0.2)
man.shift(point)
self.play(Transform(mobject, man))
self.remove(name_mob)
def construct(self):
words = TextMobject(["Which path ", "would \\emph{light} take", "?"])
words.split()[1].highlight(YELLOW)
words.to_corner(UP + RIGHT)
self.add_cycloid_end_points()
anims = [
self.photon_run_along_path(path, rate_func=smooth)
for path in self.get_paths()
]
self.play(anims[0], ShimmerIn(words))
for anim in anims[1:]:
self.play(anim)
def construct(self):
old_newton = ImageMobject("Old_Newton", invert=False)
old_newton.scale(0.8)
self.add(old_newton)
self.freeze_background()
words = TextMobject("Note the displeasure")
words.to_corner(UP + RIGHT)
face_point = 1.8 * UP + 0.5 * LEFT
arrow = Arrow(words.get_bottom(), face_point)
self.play(ShimmerIn(words))
self.play(ShowCreation(arrow))
self.wait()
def construct(self):
old_newton = ImageMobject("Old_Newton", invert = False)
old_newton.scale(0.8)
self.add(old_newton)
self.freeze_background()
words = TextMobject("Note the displeasure")
words.to_corner(UP+RIGHT)
face_point = 1.8*UP+0.5*LEFT
arrow = Arrow(words.get_bottom(), face_point)
self.play(ShimmerIn(words))
self.play(ShowCreation(arrow))
self.dither()
def add_force_definitions(self):
top_force = TexMobject("F_1 = \\dfrac{1}{v_{\\text{air}}}")
bottom_force = TexMobject("F_2 = \\dfrac{1}{v_{\\text{water}}}")
top_spring, bottom_spring = self.start_springs.split()
top_force.next_to(top_spring)
bottom_force.next_to(bottom_spring, DOWN, buff = -0.5)
words = TextMobject("""
The force in a real spring is
proportional to that spring's length
""")
words.to_corner(UP+RIGHT)
for force in top_force, bottom_force:
self.play(GrowFromCenter(force))
self.wait()
self.play(ShimmerIn(words))
self.wait(3)
self.remove(top_force, bottom_force, words)
def add_force_definitions(self):
top_force = TexMobject("F_1 = \\dfrac{1}{v_{\\text{air}}}")
bottom_force = TexMobject("F_2 = \\dfrac{1}{v_{\\text{water}}}")
top_spring, bottom_spring = self.start_springs.split()
top_force.next_to(top_spring)
bottom_force.next_to(bottom_spring, DOWN, buff = -0.5)
words = TextMobject("""
The force in a real spring is
proportional to that spring's length
""")
words.to_corner(UP+RIGHT)
for force in top_force, bottom_force:
self.play(GrowFromCenter(force))
self.dither()
self.play(ShimmerIn(words))
self.dither(3)
self.remove(top_force, bottom_force, words)
def construct(self):
words = TextMobject(
["Which path ", "would \\emph{light} take", "?"]
)
words.split()[1].highlight(YELLOW)
words.to_corner(UP+RIGHT)
self.add_cycloid_end_points()
anims = [
self.photon_run_along_path(
path,
rate_func = smooth
)
for path in self.get_paths()
]
self.play(anims[0], ShimmerIn(words))
for anim in anims[1:]:
self.play(anim)
