WorksheetsEngineering Tomorrow: Biomedical Engineering and Phototherapy
Total questions: 40
Worksheet time: 20mins
Name
Class
Date
1.
What is the primary focus of the Engineering Tomorrow session discussed in the video?
a)
Biomedical engineering application using phototherapy
b)
Chemical engineering processes
c)
Renewable energy sources
d)
Mechanical engineering principles
2.
What skill set does the speaker emphasize as beneficial for problem-solving in engineering?
a)
Artistic creativity
b)
Fact and data-driven approach
c)
Linguistic skills
d)
Historical knowledge
3.
What was the speaker's first engineering job?
a)
Process engineer at Union Carbide
b)
Consultant at McKinsey and Company
c)
CEO of GE Specialty Materials
d)
Founder of Global Infrastructure Partners
4.
What is Grover's disease characterized by?
a)
Itchy and unsightly skin condition
b)
Chronic fatigue
c)
Respiratory issues
d)
Joint pain
5.
What hypothesis did the speaker have about the cause of Grover's disease?
a)
It was related to sunlight and vitamin D synthesis
b)
It was caused by a genetic mutation
c)
It was due to a bacterial infection
d)
It was a result of poor diet
6.
What did the speaker use to test the hypothesis about sunlight's effect on Grover's disease?
a)
Vitamin D supplements
b)
Antibiotics
c)
Steroid creams
d)
Blue light phototherapy
7.
What is the role of T cells in the immune system as discussed in the video?
a)
They are derived from the thymus gland and help fight infections
b)
They produce antibodies
c)
They are responsible for allergic reactions
d)
They store energy
8.
What is the significance of the blue wavelength of light in the context of the video?
a)
It is believed to improve the immune system
b)
It causes skin cancer
c)
It is used in solar panels
d)
It is harmful to the eyes
9.
How did the speaker measure the effectiveness of blue light on Grover's disease?
a)
By observing the reduction in itchiness and rash
b)
By measuring blood pressure
c)
By tracking sleep patterns
d)
By monitoring heart rate
10.
What is the purpose of the cooling fins in the blue light device?
a)
To prevent overheating of the LEDs
b)
To increase the light intensity
c)
To change the light color
d)
To reduce the device size
11.
What is the relationship between the distance from the light source and the intensity of light?
a)
Intensity decreases as distance increases
b)
Intensity increases as distance increases
c)
Intensity remains constant
d)
Intensity fluctuates randomly
12.
What was one of the challenges the speaker faced in designing the blue light device?
a)
Balancing light intensity and exposure time
b)
Finding a suitable power source
c)
Reducing the device's weight
d)
Making the device waterproof
13.
What is the significance of the patent mentioned in the video?
a)
It protects the invention from being copied
b)
It increases the device's market value
c)
It improves the device's efficiency
d)
It reduces production costs
14.
What did the speaker discover about different fabrics and their ability to block blue light?
a)
Wool blocks more blue light than cotton
b)
Cotton blocks more blue light than wool
c)
All fabrics block blue light equally
d)
Fabrics do not block blue light
15.
What is the role of perpendicularity in light absorption?
a)
Maximizes light absorption
b)
Minimizes light absorption
c)
Has no effect on light absorption
d)
Causes light to scatter
16.
What is one of the economic considerations in designing the blue light device?
a)
Cost of the light source
b)
Color of the light
c)
Size of the device
d)
Weight of the device
17.
What is the primary benefit of using LEDs in the blue light device?
a)
High efficiency and low heat generation
b)
Low cost and easy availability
c)
Ability to change colors
d)
Compact size
18.
What was the speaker's approach to solving the problem of Grover's disease?
a)
Using engineering principles to design a solution
b)
Consulting multiple dermatologists
c)
Trying various medications
d)
Ignoring the problem
19.
What did the speaker learn about the importance of economics in engineering?
a)
Engineers must understand costs to create viable solutions
b)
Economics is irrelevant to engineering
c)
Engineering solutions are always cost-effective
d)
Economic considerations limit creativity
20.
What was one of the speaker's motivations for founding Engineering Tomorrow?
a)
To give back by mentoring students
b)
To start a profitable business
c)
To develop new technologies
d)
To compete with other engineering firms
21.
What skin condition did the speaker suffer from?
a)
Psoriasis
b)
Eczema
c)
Grover's disease
d)
Rosacea
22.
Which of the following best describes Grover's disease?
a)
A chronic skin condition that affects only women
b)
A transient skin condition that appears in summer
c)
A transient skin condition that appears in winter
d)
A skin condition that only affects children
23.
What was the speaker's approach to solving his skin condition problem?
a)
Consulting multiple dermatologists
b)
Using over-the-counter creams
c)
Applying an engineer's problem-solving skills
d)
Ignoring the problem
24.
What was the speaker's first attempt at treating his condition?
a)
Using steroid creams and antihistamines
b)
Exposure to sunlight
c)
Taking vitamin D supplements
d)
Using blue light therapy
25.
Why did the speaker think sunlight might be related to his condition?
a)
The disease appeared in winter and went away in late spring
b)
Sunlight made the condition worse
c)
His doctor recommended more sun exposure
d)
He read about it in a medical journal
26.
What was the speaker's second attempt at treating his condition?
a)
Using a tanning bed
b)
Taking vitamin C supplements
c)
Taking large doses of vitamin D
d)
Using red light therapy
27.
What wavelength of light did the speaker focus on for his treatment?
a)
Red light (650 nm)
b)
Green light (550 nm)
c)
Blue light (450 nm)
d)
Ultraviolet light (350 nm)
28.
According to the video, what effect does blue light have on T cells in the body?
a)
It slows them down
b)
It makes them move 200 times faster
c)
It destroys them
d)
It has no effect
29.
How much did the speaker estimate the immune system could improve with blue light exposure?
a)
2-3 fold
b)
4-5 fold
c)
7-8 fold
d)
10-12 fold
30.
What was the goal of the speaker's blue light device in terms of light exposure?
a)
10 Watt hours
b)
25 Watt hours
c)
41 Watt hours
d)
100 Watt hours
31.
How long did the speaker estimate it would take to get the same blue light exposure from his device compared to being in the sun?
a)
5 minutes vs 1 hour of sun
b)
10 minutes vs 2 hours of sun
c)
20 minutes vs 5 hours of sun
d)
1 hour vs 10 hours of sun
32.
What percentage of natural sunlight is in the blue light spectrum?
a)
About 2%
b)
About 5%
c)
About 7.8%
d)
About 15%
33.
What factor did the speaker consider when calculating actual blue light absorption from sunlight?
a)
Cloud coverage
b)
Skin tone
c)
Time of day
d)
All of the above
34.
What was the main challenge in designing the blue light device?
a)
Making it portable
b)
Ensuring it was cost-effective
c)
Balancing irradiance level and treatment time
d)
Powering it efficiently
35.
What material did the speaker find blocked 90% of blue light?
a)
Cotton
b)
Polyester
c)
Wool
d)
SPF 50 fabric
36.
How much blue light did the speaker find that SPF 30 or SPF 50 shirts block?
a)
About 10%
b)
About 30%
c)
About 50%
d)
About 90%
37.
What is the advantage of perpendicular light exposure?
a)
It's easier to achieve
b)
It provides maximum absorption
c)
It reduces skin damage
d)
It's more energy-efficient
38.
How many watts of power did each LED baton in the speaker's device use?
a)
50 watts
b)
100 watts
c)
200 watts
d)
400 watts
39.
Why did the speaker's device have cooling fins?
a)
To make it look cool
b)
To increase the light output
c)
To prevent overheating
d)
To make it more portable
40.
What precaution did the speaker take when demonstrating the blue light device?
a)
Wearing sunscreen
b)
Using protective goggles
c)
Turning off all other lights
d)
Standing far away from the device
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